Cascade drive chip-based display method, display and readable storage medium
A technology for driving chips and display methods, applied to static indicators, instruments, etc., can solve problems such as large voltage offset, large brightness difference in display area, gamma offset, etc., to reduce voltage offset and improve Gamma shift phenomenon, effect of improving brightness uniformity
Active Publication Date: 2022-01-21
晟合微电子(肇庆)有限公司
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Problems solved by technology
Generally speaking, the inherent offset of a single gamma amplifier is about 3-15mv (millivolts), and the voltage offset |α-β| is about 6-30mv, and the voltage offset of two adjacent driving chips The shift is large, resulting in serious gamma shift, and the brightness difference of different display areas is large
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[0034] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly described below in conjunction with specific embodiments and corresponding drawings. Apparently, the embodiments described below are only some of the embodiments of the present application, but not all of them. In the case of no conflict, the following embodiments and technical features thereof can be combined with each other, and also belong to the technical solution of the present application.
[0035] see figure 2 , is a schematic structural diagram of a display according to an embodiment of the present application. The display 20 includes a display panel 21 , a power supply chip 22 , a control chip (not shown in the figure) and several cascaded driving chips 23 . The embodiment of the present application does not limit the specific type of the display 20, for example, it may be an OLED display, an AM...
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The invention discloses a cascade drive chip-based display method, a display and a readable storage medium. The method comprises the following steps: respectively outputting power supply voltage to a first gamma amplifier and an mth gamma amplifier of each driving chip; when the same gray scale is displayed through a plurality of driving chips, using gamma voltages output by the first gamma amplifier and the mth gamma amplifier of the nth driving chip according to power supply voltages as reference voltages of the second gamma amplifier to the (m-1) th gamma amplifier of the nth driving chip and the (n + 1) th driving chip, wherein n is larger than or equal to 1; taking gamma voltages output by the second gamma amplifier to the (m-1) th gamma amplifier of the nth driving chip according to the reference voltages as the reference voltages of the second gamma amplifier to the (m-1) th gamma amplifier of the (n + 1) th driving chip correspondingly; and transmitting the gray-scale voltage output by each driving chip to a display panel and displaying the gray-scale voltage. According to the invention, the gamma offset phenomenon caused by the voltage offset between the cascaded driving chips can be improved, and the brightness uniformity is improved.
Description
technical field [0001] The present application relates to the field of display, in particular to a display method based on cascaded driver chips, a display and a readable storage medium. Background technique [0002] OLED, as a current-mode light-emitting device, has been increasingly used in high-performance displays. Due to its self-luminous characteristics, compared with LCD, OLED display panel has many advantages such as high contrast, ultra-thin, and bendable. With the popularity of large-size panels, OLED displays with cascaded driver chips are becoming more and more mainstream in the display field. However, brightness uniformity is the two main problems it needs to face at present, such as driver chips in different positions ( The inherent offset of the gamma amplifier of DDI (for example, caused by non-uniformity in electrical parameters such as threshold voltage and mobility) will be converted into the current difference and brightness difference of the display are...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G09G3/3208G09G3/3258G09G3/36
CPCG09G3/3208G09G3/3258G09G3/3611G09G2320/0276G09G2320/0233
Inventor 李正勋谭力
Owner 晟合微电子(肇庆)有限公司