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Total caching OLED display screen arrange control circuit

A technology of display screen and column control, which is applied in the direction of circuit, lamp circuit layout, energy-saving control technology, etc. It can solve the problem that the transmission utilization rate is only 50%, and achieve the effect of reducing the clock frequency, simplifying the circuit, and eliminating the loss of brightness

Inactive Publication Date: 2009-09-02
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0032] Therefore, using figure 1 and figure 2 With the control circuit method shown, the brightness loss is more than one-fifth, and the transmission utilization rate is basically only 50%

Method used

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  • Total caching OLED display screen arrange control circuit
  • Total caching OLED display screen arrange control circuit
  • Total caching OLED display screen arrange control circuit

Examples

Experimental program
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Embodiment Construction

[0056] A preferred embodiment of the present invention is described in detail as follows in conjunction with accompanying drawings:

[0057] This fully buffered OLED display column control circuit is based on figure 1 As shown in the conventional OLED column control circuit, the figure 1 The latch(25) and clrn(26) are changed to a synchronous signal, cp(21) is changed to a global clock signal, renamed to clk(41), and a serial enable signal cdena(48) is added, the signal is high When valid, allow serial lock into cdin (22), selector (32) at the same time, and add a selection signal sel (40), such as image 3 shown.

[0058] see image 3, the serializer (31) is a multi-group multi-bit band enable register, the register number of bits is the bit width of the accepted grayscale data, and multiple registers share the same clock terminal (global clock clk, 41) and enable terminal (serial enable cdena, 48), the input data of the first group of registers is the serial input signal...

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Abstract

This invention relates to one total buffer OLED display screen control circuit, which comprises input data as series input signal and output data as series output signal device and also buffer from series device input data, wherein it also comprises selector to input all data and output data from buffer; the series device has lock signal and zero signal as simultaneous signal to input series energy signals and buffer; the selector has selection terminal to select weight right input signals; the series device, buffer and selector adopt integral whole clock.

Description

technical field [0001] The invention relates to an OLED (organic electroluminescence device) display screen row control circuit, in particular to a fully buffered OLED display screen row control circuit. Among them, the image cache is appropriately increased to improve the scanning efficiency of the display and reduce the loss of brightness during scanning, and can directly accept grayscale data. Background technique [0002] With the rapid development of VLSI (Large Scale Integrated Circuit) and new display devices, people pay more and more attention to the application of OLED (Organic Electroluminescent Device) in the display field, and corresponding OLED display device driver chips appear accordingly. The requirements for display driver chips with rich functions, superior performance and convenient application are increasingly strong. [0003] The display data of the traditional OLED flat panel display is transmitted from the controller to the display panel usually using...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32G09G3/30G09G3/20H05B33/08H05B33/14H05B37/02H01L51/50H01L27/32G09G3/3208H05B44/00
CPCY02B20/42Y02B20/40
Inventor 陈章进徐美华冉峰郑方姜玉稀
Owner SHANGHAI UNIV
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