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1. 发明授权

US12022581B2 Display device 有权
公开(公告)号：US12022581B2
公开(公告)日：2024-06-25
申请号：US17758991
申请日：2021-01-19
申请人： SONY SEMICONDUCTOR SOLUTIONS CORPORATION
发明人： Seiya Matsuo , Masaki Yoshioka , Kouichi Hashikaki
IPC分类号： G09G3/3233 , H05B33/02 , H10K59/12
CPC分类号： H05B33/02 , G09G3/3233 , G09G2300/0842 , G09G2320/0233 , G09G2320/0626 , G09G2360/10 , H10K59/12
摘要： To improve display quality in a case where pixels are driven by using a ramp wave voltage.
A display device includes a plurality of pixel circuits arranged in at least one direction, a plurality of signal lines that supplies the plurality of pixel circuits with signal voltage corresponding to gradation, a voltage output unit that generates ramp wave voltage having a voltage level that changes with time, a ramp wiring that supplies the ramp wave voltage generated in the voltage output unit, a plurality of voltage holding units that is connected between the ramp wiring and the plurality of signal lines, and holds the ramp wave voltage at a timing corresponding to luminance of the plurality of pixel circuits to generate the signal voltage, a plurality of correction current sources that supplies correction current to a plurality of connection paths of the ramp wiring and the plurality of voltage holding units, and a current adjustment unit that adjusts the correction current on the basis of a voltage difference, on a predetermined connection path, of when setting a predetermined luminance to a pixel circuit connected to the predetermined connection path, in a case where the correction current is passed from the plurality of correction current sources to the plurality of connection paths, and in a case where the correction current is not passed from the plurality of correction current sources to the plurality of connection paths.

2. 发明授权

US10615786B2 Comparator circuit, A/D conversion circuit, and display apparatus 有权
公开(公告)号：US10615786B2
公开(公告)日：2020-04-07
申请号：US16230328
申请日：2018-12-21
申请人： SONY SEMICONDUCTOR SOLUTIONS CORPORATION
发明人： Takaaki Sugiyama , Masaki Yoshioka , Ken Kikuchi , Masaru Chibashi , Ken Kitamura
IPC分类号： H03K5/24 , H03K5/08 , G09G3/20 , G09G3/32 , H03M1/34 , H03M1/12 , H03M1/50 , H03M1/56
CPC分类号： H03K5/2481 , G09G3/2014 , G09G3/2018 , G09G3/2074 , G09G3/32 , H03K5/08 , H03K5/249 , H03M1/34 , G09G2300/0426 , G09G2300/0439 , G09G2300/0819 , G09G2310/0291 , G09G2310/06 , G09G2320/0233 , G09G2320/064 , G09G2330/021 , H03M1/123 , H03M1/504 , H03M1/56
摘要： A comparator circuit according to the present disclosure includes a first switch section that selectively takes in a signal voltage, a second switch section that selectively takes in a control waveform, a differential amplifier including a non-inverted input end connected to each of output ends of the first switch section and the second switch section, a capacity section including one end connected to an inverted input end of the differential amplifier and the other end supplied with a reference voltage, and a third switch section that selectively short-circuits the inverted input end and an output end of the differential amplifier.

3. 发明申请

US20170163253A1 COMPARATOR CIRCUIT, COMPARATOR CIRCUIT CONTROL METHOD, A/D CONVERSION CIRCUIT, AND DISPLAY APPARATUS 有权
公开(公告)号：US20170163253A1
公开(公告)日：2017-06-08
申请号：US15439163
申请日：2017-02-22
申请人： Sony Semiconductor Solutions Corporation
发明人： Takaaki Sugiyama , Ken Kitamura , Masaki Yoshioka , Ken Kikuchi
IPC分类号： H03K5/24 , G09G3/3233 , G09G3/20
CPC分类号： H03K5/2481 , G09G3/2014 , G09G3/32 , G09G3/3233 , G09G2310/0297 , G09G2310/066 , G09G2370/08 , H04N5/3765 , H04N5/378
摘要： A comparator circuit includes a differential circuit unit which detects a difference between two input signals, a current supply unit which supplies a current to the differential circuit unit, and a control unit which detects an operation timing of the differential circuit unit and controls the current supplied to the differential circuit unit by the current supply unit according to a detection result thereof.

4. 发明授权

US11922890B2 Signal line drive circuit 有权
公开(公告)号：US11922890B2
公开(公告)日：2024-03-05
申请号：US18020739
申请日：2021-09-29
申请人： Sony Semiconductor Solutions Corporation
发明人： Masaki Yoshioka
IPC分类号： G09G3/3291 , G09G3/3225
CPC分类号： G09G3/3291 , G09G3/3225 , G09G2300/0828 , G09G2300/0842 , G09G2310/0294 , G09G2310/08 , G09G2320/0233 , G09G2330/021
摘要： A variation in a signal line voltage is suppressed.
A signal line drive circuit drives a plurality of signal lines, and the signal line drive circuit includes: a reference voltage generation unit that generates a reference voltage whose voltage level changes with time in a first period before the plurality of signal lines is driven; a current holding unit that is provided to correspond to the signal line and holds a current corresponding to a load of the signal line and a temporal change of the reference voltage; and a current control unit that causes the current held by the current holding unit to flow through the corresponding signal line in a second period after a lapse of the first period to generate a drive voltage of the signal line.

5. 发明公开

US20230298533A1 SIGNAL LINE DRIVE CIRCUIT 审中-公开
公开(公告)号：US20230298533A1
公开(公告)日：2023-09-21
申请号：US18020739
申请日：2021-09-29
申请人： Sony Semiconductor Solutions Corporation
发明人： Masaki Yoshioka
IPC分类号： G09G3/3291 , G09G3/3225
CPC分类号： G09G3/3291 , G09G3/3225 , G09G2300/0828 , G09G2300/0842 , G09G2310/08 , G09G2320/0233 , G09G2330/021 , G09G2310/0294
摘要： A variation in a signal line voltage is suppressed.
A signal line drive circuit drives a plurality of signal lines, and the signal line drive circuit includes: a reference voltage generation unit that generates a reference voltage whose voltage level changes with time in a first period before the plurality of signal lines is driven; a current holding unit that is provided to correspond to the signal line and holds a current corresponding to a load of the signal line and a temporal change of the reference voltage; and a current control unit that causes the current held by the current holding unit to flow through the corresponding signal line in a second period after a lapse of the first period to generate a drive voltage of the signal line.

6. 发明授权

US09906212B2 Comparator circuit, comparator circuit control method, A/D conversion circuit, and display apparatus 有权
公开(公告)号：US09906212B2
公开(公告)日：2018-02-27
申请号：US15439163
申请日：2017-02-22
申请人： Sony Semiconductor Solutions Corporation
发明人： Takaaki Sugiyama , Ken Kitamura , Masaki Yoshioka , Ken Kikuchi
IPC分类号： G09G5/00 , H03K5/24 , G09G3/32 , G09G3/20 , G09G3/3233 , H04N5/376 , H04N5/378
CPC分类号： H03K5/2481 , G09G3/2014 , G09G3/32 , G09G3/3233 , G09G2310/0297 , G09G2310/066 , G09G2370/08 , H04N5/3765 , H04N5/378
摘要： A comparator circuit includes a differential circuit unit which detects a difference between two input signals, a current supply unit which supplies a current to the differential circuit unit, and a control unit which detects an operation timing of the differential circuit unit and controls the current supplied to the differential circuit unit by the current supply unit according to a detection result thereof.

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