Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and apparatus for driving display panel

一种显示面板、设备的技术，应用在静态指示器、仪器等方向，能够解决大面积、消耗大电力、占用等问题

Active Publication Date: 2011-04-20
MAGNACHIP SEMICON LTD
View PDF11 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] However, each channel includes a counter formed by a plurality of flip-flops and a (N-M) bit pulse signal generator 230 formed by a plurality of logic circuits, and the DAC still occupies a large area.
In addition, when the (N-M) bit pulse signal generators of all channels operate synchronously with the clock signal, a large amount of power is still consumed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for driving display panel
  • Method and apparatus for driving display panel
  • Method and apparatus for driving display panel

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0048] image 3 It is a block diagram illustrating a driver for a display panel using a multi-time-varying signal (TVS) generator and a common pulse signal generator according to a first embodiment of the present invention.

[0049] see image 3 , the driver includes a driver configured to generate multiple (2 M multiple time-varying signal (TVS) generator 310 of a) time-varying signal and is configured to generate multiple (2 TVS) generators with different pulse widths N-M a) common pulse signal generator 330 for the pulse signal. Moreover, the driver includes a selector 320 and a channel buffer 340 . Selector 320 receives the multiple (2 M a) time-varying signal, the multiple (2 N-M a) pulse signal and video data D to select the grayscale voltage corresponding to the video data. The channel buffer 340 outputs the output of the selector 320 to the source lines of the display panel. Herein, N and M are positive integers and N is greater than M (N>M). For each period of...

no. 2 example

[0071] The first embodiment described above describes the use of multiple time-varying signals. Hereinafter, a second embodiment using a single time-varying signal will be described. As in the first embodiment, the second embodiment to be described hereinafter uses a common pulse signal generator. The common pulse signal generator includes a register for controlling the on / off time ratio of the pulse signal.

[0072] Figure 8 It is a block diagram illustrating a driver using a single TVS generator and a common pulse signal generator according to the second embodiment of the present invention.

[0073] see Figure 8 , the driver includes a single TVS generator 810 , a common pulse signal generator 830 , a selector 820 and a channel buffer 840 . Single TVS generator 810 generates a single time-varying signal. The common pulse signal generator 830 produces multiple (2 N a) pulse signal. The selector 820 receives the single time-varying signal, the plurality of pulse signa...

no. 3 example

[0086] In the first and second embodiments described above, the target grayscale voltage is determined based on the time-varying signal having a voltage value and the width of the pulse signal. However, in the third embodiment to be described hereinafter, the target grayscale voltage is determined based on a time-varying signal having a current value and the width of a pulse signal, and all other constituent elements and operations are the same.

[0087] Figure 11A For illustration shown in Figure 5 A block diagram of a modified example of a selector for a drive in .

[0088] see Figure 11A The TVS selection unit 426_1 includes a 1-bit decoding element 426A_1 , a voltage-to-current conversion (VCC) element 426C and a switching element 426B_1 .

[0089] The 1-bit decoding element 426A_1 selects and outputs one of the two voltage time-varying signals TVS_V and TVS_V based on the upper 1-bit data D obtained from the level shift unit 424 . The voltage-to-current converting ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An apparatus for driving a display panel includes: a time variant signal (TVS) generator configured to generate a time variant signal group; a common pulse signal generator configured to generate a plurality of pulse signals; a selector configured to receive the time variant signal, the plurality of the pulse signals, and video data and select a grayscale voltage corresponding to the video data; and a buffer configured to buffer and transfer an output of the selector. Herein, the selector and the buffer are provided to each of a plurality of channels, and the time variant signal and the plurality of the pulse signals are inputted in common to the selector of each channel.

Description

[0001] Cross References to Related Applications [0002] This application claims the priority of Korean Patent Application No. 10-2009-0088640 and No. 10-2009-0101398 filed on September 18, 2009 and October 23, 2009, respectively, the entire contents of which are incorporated by reference incorporated into this article. technical field [0003] Exemplary embodiments of the present invention relate to circuits and methods for driving flat display panels, and more particularly, to effective structures of data drivers for applying image data in the form of voltage or current to the display panel. The data drivers may be referred to as column line drivers or source drivers. Background technique [0004] The data driver of the flat display panel converts digital video data into analog video data and transmits the analog video data to the display panel. A digital-to-analog converter (DAC) occupies a large area of ​​the entire structure of the data driver, and there have been var...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20
CPCG09G2310/027G09G3/3688
Inventor 金范陈金姬正林大湖曹基锡
Owner MAGNACHIP SEMICON LTD
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com