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    • 3. 发明专利
    • Thin film transistor, method of manufacturing the same, and display element
    • 薄膜晶体管,其制造方法和显示元件
    • JP2008016807A
    • 2008-01-24
    • JP2006348032
    • 2006-12-25
    • Lg Philips Lcd Co Ltdエルジー フィリップス エルシーディー カンパニー リミテッド
    • SAI MOTONARIHEO JAE SEOKJUN WOONG GI
    • H01L29/786H01L21/312H01L21/316H01L21/318H01L21/336
    • H01L29/78669H01L27/1248H01L27/1292H01L29/458H01L29/4908H01L29/66765H01L51/0533H01L51/0545
    • PROBLEM TO BE SOLVED: To provide a thin film transistor, a method of manufacturing the same, and a display element which can obtain a gate insulating film with a high dielectric constant by stacking a first gate insulating film of sol-gel type with a high dielectric constant and a second gate insulating film made of amorphous silicon or a polymeric organic substance with a relatively low dielectric constant, so that the gate insulating film having a double layer is formed. SOLUTION: The method of manufacturing the thin film transistor includes the steps of: forming a gate electrode on a substrate; forming a semiconductor layer which is insulated from the gate electrode and partially overlaps the gate electrode; forming a first gate insulating film and a second gate insulating film in this order between the gate electrode and the semiconductor layer, the first gate insulating film containing a sol compound of silicon alkoxide and metal alkoxide, the second gate insulating film containing a different substance; and forming source/drain electrodes on both sides of the semiconductor layer. COPYRIGHT: (C)2008,JPO&INPIT
    • 解决的问题:为了提供薄膜晶体管及其制造方法,以及通过层叠溶胶凝胶型第一栅极绝缘膜,能够获得具有高介电常数的栅极绝缘膜的显示元件 具有高介电常数和由非晶硅或具有相对低的介电常数的聚合有机物质制成的第二栅极绝缘膜,从而形成具有双层的栅极绝缘膜。 解决方案:制造薄膜晶体管的方法包括以下步骤:在衬底上形成栅电极; 形成与栅电极绝缘并部分地与栅电极重叠的半导体层; 在栅极和半导体层之间依次形成第一栅极绝缘膜和第二栅极绝缘膜,第一栅极绝缘膜含有硅醇盐和金属醇盐的溶胶化合物,第二栅极绝缘膜含有不同的物质; 以及在半导体层的两侧形成源/漏电极。 版权所有(C)2008,JPO&INPIT
    • 4. 发明专利
    • Organic light emitting diode display device and driving method thereof
    • 有机发光二极管显示装置及其驱动方法
    • JP2008015516A
    • 2008-01-24
    • JP2007168250
    • 2007-06-26
    • Lg Philips Lcd Co Ltdエルジー フィリップス エルシーディー カンパニー リミテッド
    • KIM IN HWAMBYUN SEUNG CHANKIM JIN HYOUNG
    • G09G3/30G09G3/20H01L51/50
    • G09G3/3225G09G3/2022G09G2320/0276G09G2360/145G09G2360/148G09G2360/16
    • PROBLEM TO BE SOLVED: To provide an organic light emitting diode display device for changing a gamma reference voltage step by step in accordance with video brightness of a current frame, and to provide a driving method of the device.
      SOLUTION: The device includes: a brightness detector 121 that calculates the maximum brightness value of each pixel using input video data of a current frame; an adder 122 that adds all maximum brightness values of each pixel which are detected by the brightness detector 121; an average value calculator 123 that calculates the average brightness value of a current frame using the added value of maximum brightness values which are added by the adder 122; a gamma weight calculator 124 that calculates a gamma reference voltage weight which is set to correspond to the calculated average brightness value among predetermined gamma reference voltage weights; and a gamma reference voltage generator that changes a gamma reference voltage step by step in accordance with a gamma reference voltage weight which is calculated by the gamma weight calculator 124.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种根据当前帧的视频亮度逐步改变伽马参考电压的有机发光二极管显示装置,并提供该装置的驱动方法。 该装置包括:亮度检测器121,其使用当前帧的输入视频数据来计算每个像素的最大亮度值; 加法器122,其添加由亮度检测器121检测的每个像素的所有最大亮度值; 使用由加法器122相加的最大亮度值的相加值来计算当前帧的平均亮度值的平均值计算器123; 伽马加权计算器124,其计算在预定的伽马参考电压权重之间被设置为对应于所计算的平均亮度值的伽马参考电压权重; 以及伽马参考电压发生器,其根据伽马权重计算器124计算的伽马参考电压权重逐步改变伽马参考电压。(C)2008,JPO和INPIT
    • 5. 发明专利
    • Organic light emitting diode display and driving method thereof
    • 有机发光二极管显示及其驱动方法
    • JP2008015515A
    • 2008-01-24
    • JP2007168249
    • 2007-06-26
    • Lg Philips Lcd Co Ltdエルジー フィリップス エルシーディー カンパニー リミテッド
    • KIM IN HWAMBYUN SEUNG CHANYU SANG HOKIM JIN HYOUNG
    • G09G3/30G09G3/20G09G3/32H01L51/50
    • G09G3/3233G09G2320/0233G09G2320/0271G09G2320/043G09G2320/0673
    • PROBLEM TO BE SOLVED: To prevent decrease in a life span of an organic light emitting diode device and to prevent degradation in uniformity of an image in a low luminance range. SOLUTION: The method comprises steps of: analyzing a digital data corresponding to an input image of a screen to analyze an accumulated density distribution for each grayscale range of the image to be displayed on the screen; modulating the digital data of the input image to lower a tilt of a gamma curve corresponding to a preliminarily set high grayscale range among gamma curves of the input image if the data belonging to the high grayscale range is determined as dominant according to the analyzed result; modulating the digital data of the input image to raise a tilt of a gamma curve corresponding to a specific grayscale range among gamma curves of the input image if the data belonging to the preliminarily set specific grayscale range lower than the high grayscale range is determined as dominant according to the analyzed result of the accumulated density distribution for each grayscale range; and converting the digital data having the controlled grayscale in the high grayscale range and the specific grayscale range into an analog signal to display it on an organic light emitting diode display panel. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了防止有机发光二极管装置的使用寿命的降低并且防止图像在低亮度范围内的均匀性的劣化。 解决方案:该方法包括以下步骤:分析与屏幕的输入图像相对应的数字数据,以分析要在屏幕上显示的图像的每个灰度范围的累积浓度分布; 如果根据分析结果将属于高灰阶范围的数据确定为主导,则调制输入图像的数字数据以降低与输入图像的伽马曲线之间的预设高灰度范围对应的伽马曲线的倾斜; 调整输入图像的数字数据,如果属于初始设置的比灰度范围高的特定灰度范围的数据被确定为主导,则输入图像的伽马曲线之间的伽马曲线的对应于特定灰度范围的伽马曲线的倾斜被确定为主要 根据每个灰度范围的累积密度分布的分析结果; 并将具有高灰度范围和特定灰阶范围内的受控灰度的数字数据转换为模拟信号,以将其显示在有机发光二极管显示面板上。 版权所有(C)2008,JPO&INPIT
    • 6. 发明专利
    • Reference voltage generating circuit and liquid crystal display device using the same
    • 参考电压发生电路和液晶显示装置
    • JP2008015456A
    • 2008-01-24
    • JP2006338792
    • 2006-12-15
    • Lg Philips Lcd Co Ltdエルジー フィリップス エルシーディー カンパニー リミテッド
    • LEE BU YEOL
    • G09G3/36G02F1/133G09G3/20H02M3/07
    • G09G3/3655G09G3/3614G09G2320/0247
    • PROBLEM TO BE SOLVED: To provide a reference voltage generating circuit suitable for generation of a reference voltage, the circuit showing a short transition period between at least two levels and stably maintaining the transition level.
      SOLUTION: The reference voltage generating circuit includes: a main pumping section selectively performing fast positive and negative pumping for rapidly increasing or decreasing an output voltage on the output node; a sub-pumping section selectively performing slow positive and negative pumping for slowly increasing or decreasing an output voltage on the output node; an input section inputting a level designating signal alternately and periodically designating a first reference level and a second reference level lower than the first level; and a switch control section alternately comparing an output voltage with the first and second reference levels in response to the level designating signal, and selecting one of the positive and negative pumping in the main pumping section and the positive and negative pumping in the sub pumping section.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了提供适于产生参考电压的参考电压产生电路,该电路在至少两个电平之间显示短的过渡期,并稳定地保持转换电平。 参考电压产生电路包括:主泵送部分选择性地执行快速正和负泵浦以快速增加或减小输出节点上的输出电压; 子泵浦部分选择性地执行缓慢的正和负泵浦以缓慢地增加或减小输出节点上的输出电压; 输入部分交替地输入电平指定信号并且周期性地指定低于第一电平的第一参考电平和第二参考电平; 以及开关控制部分,响应于电平指定信号交替地将输出电压与第一和第二参考电平进行比较,并且选择主泵送部分中的正和负泵浦中的一个以及副泵送部分中的正和负泵浦 。 版权所有(C)2008,JPO&INPIT
    • 8. 发明专利
    • Thin-film transistor, and liquid-crystal display
    • 薄膜晶体管和液晶显示器
    • JP2008004771A
    • 2008-01-10
    • JP2006172920
    • 2006-06-22
    • Lg Philips Lcd Co Ltdエルジー フィリップス エルシーディー カンパニー リミテッド
    • OANA YASUHISA
    • H01L29/786G02F1/1368
    • PROBLEM TO BE SOLVED: To improve image quality by improving charge retention characteristics of a TFT liquid-crystal display. SOLUTION: A thin-film transistor is provided with a source electrode 13 having a pair of electrode branches; a drain electrode 14 whose electrode branch is arranged in parallel and oppositely to a pair of the electrode branches of the source electrode between a pair of the electrode branches of the source electrode; and a semiconductor layer 12 that is formed only in a channel region 12b, where a pair of the electrode branches of the source electrode and the electrode branch of the drain electrode are arranged in parallel and oppositely to each other, as a semiconductor layer formed in the channel region between the source electrode and the drain electrode. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:通过改进TFT液晶显示器的电荷保持特性来提高图像质量。 解决方案:薄膜晶体管设置有具有一对电极分支的源电极13; 漏电极14,其电极分支与源电极的一对电极分支之间的源电极的一对电极分支平行并相对配置; 以及仅形成在沟道区域12b中的半导体层12,其中源电极的一对电极分支和漏电极的电极分支彼此平行且相对布置,作为形成在半导体层中的半导体层 源电极和漏电极之间的沟道区域。 版权所有(C)2008,JPO&INPIT
    • 9. 发明专利
    • Organic light-emitting diode display device and driving method thereof
    • 有机发光二极管显示装置及其驱动方法
    • JP2007323040A
    • 2007-12-13
    • JP2006299233
    • 2006-11-02
    • Lg Philips Lcd Co Ltdエルジー フィリップス エルシーディー カンパニー リミテッド
    • KIM O HYUNCHUNG HOON JUJUNG MYOUNG HOON
    • G09G3/30G09G3/20H01L51/50
    • G09G3/3233G09G2300/0417G09G2300/0819G09G2300/0842G09G2300/0861G09G2320/043
    • PROBLEM TO BE SOLVED: To minimize a voltage drop by a driving voltage supply line and an adverse effect by a threshold voltage change of a thin film transistor to uniform display brightness. SOLUTION: An organic light-emitting diode display device includes: a TFT M1 which is maintained at an off-state in a first period and then supplies a reference voltage to a first node in a second period by a first scan signal; a TFT M2 which supplies a data voltage to the first node by a second scan signal in the first period and then is maintained at an off-state in the second period; and a TFT M3 which adjusts a current to an OLED by the voltage of a second node; a TFT M4 which supplies a reference current to the second node by a second scan signal in the first period and is then maintained at an off-state in the second period; a TFT M5 which forms a current path between the second node and a third node by the second scan signal in the first period and is then maintained at an off-state in the second period; and a TFT M6 which cuts off the current flowing to the OLED via the third node in the first period and then forms a current path between the third node and the OLED by one of the first scan signal and second scan signal in the second period. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了使由驱动电压供给线引起的电压降最小化以及由薄膜晶体管的阈值电压变化引起的不利影响,使均匀的显示亮度。 解决方案:有机发光二极管显示装置包括:TFT M1,其在第一周期中保持在截止状态,然后在第二周期中通过第一扫描信号将参考电压提供给第一节点; TFT M2,其在第一周期中通过第二扫描信号向第一节点提供数据电压,然后在第二周期中保持关闭状态; 以及TFT M3,其通过第二节点的电压调节到OLED的电流; TFT M4,其在第一时段中通过第二扫描信号将参考电流提供给第二节点,然后在第二周期中保持在截止状态; TFT M5,其在第一周期中通过第二扫描信号在第二节点和第三节点之间形成电流路径,然后在第二周期中保持关闭状态; 以及TFT M6,其在第一时段中通过第三节点切断流向OLED的电流,然后在第二周期中通过第一扫描信号和第二扫描信号之一在第三节点和OLED之间形成电流路径。 版权所有(C)2008,JPO&INPIT