显示驱动电路及显示装置

Abstract

本申请公开了一种显示驱动电路及显示装置。显示驱动电路包括栅极驱动电路，经相应的扫描线与多个像素相连接并提供扫描信号；源极驱动电路，经相应的数据线与多个像素相连接并提供数据信号；以及电压切换电路，与扫描线和数据线相连接并提供第一控制信号、第二控制信号和第一电压信号，其中，在第一控制信号为无效电平时，多个像素根据第二控制信号的有效电平开启并根据第一电压信号显示平面态，在第一控制信号为有效电平时，多个像素根据有效的扫描信号开启并根据数据信号显示焦锥态或平面态。在第一控制信号为无效电平时，通过第一电压信号和有效的第二控制信号对全部像素进行平面态的刷新，利于提升稳定性。

Claims

1. A display driving circuit for driving a plurality of pixels on a display panel, characterized in that, The display driving circuit includes: The gate driving circuit is connected to the plurality of pixels via corresponding scan lines and provides scan signals; The source drive circuit is connected to the plurality of pixels via corresponding data lines and provides data signals; and A voltage switching circuit is connected to the scan line and the data line and provides a first control signal, a second control signal, and a first voltage signal. When the first control signal is at an invalid level, the plurality of pixels are activated according to the valid level of the second control signal and display a planar state according to the first voltage signal. When the first control signal is at an active level, the plurality of pixels are activated according to the active scan signal and display either the focal cone state or the planar state according to the data signal.

2. The display driving circuit according to claim 1, wherein The voltage switching circuit provides an invalid level for the first control signal according to the refresh instruction. The invalid level of the first control signal has a set width, and the second control signal is out of phase with the first control signal.

3. The display driving circuit according to claim 2, wherein The voltage switching circuit includes: The control module provides configuration data and switching signals according to the refresh instruction; A voltage signal generation module is connected to the control module, and the voltage signal generation module converts the configuration data to provide the first voltage signal; A control signal generation module is connected to the control module. The control signal generation module compares the switching signal and the reference signal, and provides the first control signal and the second control signal according to the comparison result. A first switching module, connected to the scan line and the data line, connects the plurality of pixels to the gate driving circuit and the source driving circuit during the effective level of the first control signal; and The second switching module is connected to the scan line and the data line. During the effective level of the second control signal, the second switching module connects the plurality of pixels with the second control signal and the first voltage signal.

4. The display driving circuit according to claim 3, characterized in that, The voltage signal generation module includes: A digital-to-analog converter, connected to the control module, receives and converts the configuration data to provide an initial voltage signal; and A first amplifier, connected to the digital-to-analog converter, biases and amplifies the received initial voltage signal to provide the first voltage signal.

5. The display driving circuit according to claim 4, wherein The voltage signal generation module further includes: The second amplifier, connected to the digital-to-analog converter, performs inverted bias amplification on the initial voltage signal to provide a common voltage signal for the plurality of pixels.

6. The display driving circuit according to claim 3, wherein The control signal generation module includes: A first comparator and a second comparator are cross-connected at their inputs. The first comparator compares the switching signal and a reference signal and provides the first control signal. The second comparator compares the switching signal and the reference signal and provides the second control signal. The positive power supply terminals of the first comparator and the second comparator are connected to the gate on-state voltage, and the negative power supply terminals are connected to the gate off-state voltage.

7. The display driving circuit according to claim 3, wherein The first switching module includes: Each scan line is connected to the gate drive circuit via a first switching element. The second switching element connects each of the data lines to the source drive circuit via its respective second switching element. When the first control signal is at an active level, the first switching element and the second switching element are closed.

8. The display driving circuit according to claim 3, wherein, The second switching module includes: The third switching element connects each of the scan lines to the second control signal via its respective third switching element. The fourth switching element connects each of the data lines to the first voltage signal via its respective fourth switching element. During the effective level of the second control signal, the third and fourth switching elements are closed.

9. The display driving circuit according to claim 8, wherein, The second switching module also includes: A fifth switching element, one end of which is connected to each of the fourth switching elements, and the other end of which is connected to the first voltage signal, wherein the fifth switching element is closed during the effective level of the second control signal.

10. A display device, characterized by comprising: include: The display panel includes multiple pixels; as well as The display driving circuit as described in any one of claims 1-9.

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