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1. 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.

2. 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.

3. 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.

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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