WO2012031504A1 - 显示装置及源极驱动板 - Google Patents
显示装置及源极驱动板 Download PDFInfo
- Publication number
- WO2012031504A1 WO2012031504A1 PCT/CN2011/077255 CN2011077255W WO2012031504A1 WO 2012031504 A1 WO2012031504 A1 WO 2012031504A1 CN 2011077255 W CN2011077255 W CN 2011077255W WO 2012031504 A1 WO2012031504 A1 WO 2012031504A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- source driving
- backlight
- driving circuit
- source
- board
- Prior art date
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Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
Definitions
- the utility model relates to the technical field of display, in particular to a display device and a source driving board.
- the liquid crystal display generally includes a display module 5 and a backlight module 8.
- the display module 5 includes a non-emissive display panel 501, a source driving circuit 502, a source driving board 505, a gate driving circuit 503, and a timing control board 510.
- the source driving circuit 502 is electrically connected between the source driving board 505 and the non-self-luminous display panel 501
- the gate driving circuit 503 is electrically connected to the non-self-luminous display panel 501 to control pixels in the pixels on the non-self-luminous display panel 501.
- the transistor is turned on/off, and the source driving circuit 502 and the gate driving circuit 503 are both controlled by the timing controller 511 on the timing control board 510.
- the source driving circuit 502 receives the display of the source driving board 505 and the gate driving circuit 503 to provide a display material signal to the non-self-luminous display panel 501 for image display.
- a gamma voltage generator (Gamma) is disposed on the source driving board 505.
- Voltage Generator 506 to perform gamma correction on the displayed image.
- the timing control board 510 is electrically connected to the source driving board 505 to output a display data signal and a timing control signal to the source driving board 505, and then supplied from the source driving board 505 to the source driving circuit 502 and the gate driving circuit 503.
- the backlight module 8 includes a backlight 801, a backlight driving board 802, and an optical film group 803.
- the backlight 801 is disposed on the side of the optical film group 803 and is controlled by the backlight driving board 802 to perform corresponding brightness expression.
- the optical film group 803 may include an optical film such as a light guide plate and a diffusion sheet.
- a backlight driving circuit including a constant current source circuit 805 and a DC-DC converting circuit 806 is disposed on the backlight driving board 802.
- the constant current source circuit 805 can make the current flowing through the backlight 801 a constant value.
- the DC-to-DC conversion circuit 806 receives a DC power output from a power board (not shown), for example, a 24V DC voltage, and converts it to a DC operating voltage of the backlight 801, for example, a 60V DC voltage, to supply power to the backlight 801.
- a power board not shown
- a 24V DC voltage for example, a 24V DC voltage
- a DC operating voltage of the backlight 801 for example, a 60V DC voltage
- the source driving board 505 and the backlight driving board 802 are independent driving boards, which occupy a relatively large space, which is disadvantageous to the development trend of the thin and light display device, and also brings the whole machine assembly.
- the reduction in efficiency leads to higher manufacturing costs.
- the purpose of the present invention is to provide an integrated display device and a source driving board thereof to save space and reduce manufacturing costs.
- a display device includes a display module and a backlight module.
- the display module includes a non-self-luminous display panel, a source driving circuit, and a source driving board.
- the source driving circuit is electrically connected to the source driving.
- the board and the non-self-luminous display panel are controlled by the source driving board to provide a display data signal to the non-self-illuminating display panel for image display;
- the backlight module includes a backlight and a backlight driving circuit, and the backlight receives the backlight driving circuit The corresponding brightness is presented by the control; the backlight driving circuit is integrated on the source driving board.
- the non-self-luminous display panel may be a liquid crystal display panel.
- a gamma voltage generator may be further disposed on the source driving board to perform gamma correction on the display image.
- the source driving circuit may include a plurality of flexible circuit boards and a plurality of source driving chips respectively disposed on the plurality of flexible circuit boards.
- the backlight driving circuit may include a constant current source circuit and a DC-to-DC conversion circuit, so that the backlight receives power supply power from the source driving board.
- the backlight module may further comprise an optical film set, and the backlight is disposed sideways on the side of the optical film set.
- the backlight can be an LED strip.
- a source driving board is suitable for use in a display device.
- the display device includes a non-self-luminous display panel, a source driving circuit, and a backlight.
- the source driving circuit is electrically connected to the source driving board through the source driving board.
- the non-self-luminous display panel is controlled by the source driving board to provide a display data signal to the non-self-luminous display panel for image display, and the source driving board is provided with a backlight driving circuit to control the brightness performance of the backlight.
- the embodiment of the present invention makes the space on the source driving board fully utilized by integrating the backlight driving circuit on the source driving board, thereby saving space, and since the backlight driving board in the prior art can be omitted, It can save on printed circuit board costs and reduce manufacturing costs.
- FIG. 1 is a block diagram showing the structure of a liquid crystal display device in the prior art.
- FIG. 2 is a block diagram showing the structure of a liquid crystal display device according to an embodiment of the present invention.
- source driver chip 118 gate driver chip
- backlight driving board 202 backlight driving circuit
- a display device such as a liquid crystal display device includes a display module 10 and a backlight module 20.
- a display module 10 includes a display module 10 and a backlight module 20.
- the embodiment of the present invention is merely illustrative of a liquid crystal display device, and is not intended to limit the present invention.
- the liquid crystal display device can be changed to other display devices that require backlight illumination.
- the display module 10 includes a non-self-luminous display panel 101, a source driving circuit 102, a source driving board 105, a gate driving circuit 103, and a timing control board 110.
- the non-self-luminous display panel 101 may be a liquid crystal display panel.
- the non-self-luminous display panel 101 is provided with a plurality of gate lines GL, a plurality of data lines SL, and a plurality of pixels P electrically coupled to the gate lines GL and the data lines SL.
- the gate lines GL and the data lines SL cross. Settings. Only one gate line GL, one data line SL, and one pixel P are shown in FIG. 2 as an example.
- the pixel P includes a transistor, a storage capacitor Cst, and a liquid crystal capacitor Clc.
- the gate of the transistor is electrically coupled to the gate line GL
- the source/drain of the transistor is electrically coupled to the data line SL.
- the drain/source of the transistor is electrically coupled to one end of the storage capacitor Cst and the liquid crystal capacitor Clc.
- the other end of the liquid crystal capacitor Clc receives a common voltage (not shown), and the other end of the storage capacitor Cst is electrically coupled to a common electrode (not shown) of the pixel P to receive a common voltage.
- the timing controller 110 is provided with a timing controller 111, and is electrically connected to the source driving board 105 to output a display data signal and a timing control signal to the source driving board 105, and further to the source driving circuit 102 and the gate driving circuit 103. Timing control is performed and a display data signal is supplied to the source driving circuit 102.
- the source driving circuit 102 is electrically connected between the source driving board 105 and the non-self-luminous display panel 101.
- the gate driving circuit 103 is electrically connected to the non-self-luminous display panel 101 to control the on/off state of the transistors in the pixel P.
- the source driving circuit 102 receives the control of the source driving board 105 and the gate driving circuit 103 together to provide a display material signal to the non-self-luminous display panel 101 for image display.
- the source driving circuit 102 includes a plurality of flexible circuit boards 107 and a plurality of source driving chips respectively disposed on the plurality of flexible circuit boards 107 (Source Driver, SD) 108.
- the gate driving circuit 103 includes a plurality of flexible circuit boards 117 and a plurality of gate driving chips respectively disposed on the plurality of flexible circuit boards 111 (Gate Driver, GD) 118.
- the source driving chip 108 and the gate driving chip 118 may be packaged by a tape carrier (Tape Carrier).
- a package (TCP) method or a chip on film (COF) package is disposed on the flexible circuit board 107 and the flexible circuit board 117, respectively.
- a backlight driving circuit 202 is disposed on the source driving board 105.
- a gamma voltage generator 106 is further disposed on the source driving board 105 to perform gamma correction on the display image.
- the backlight driving circuit 202 includes a constant current source circuit 205 and a direct current to direct current converting circuit 206 such that the backlight 201 receives power source power from the source driving board 105.
- the constant current source circuit 205 can make the current flowing through the backlight 201 a constant value.
- the DC-to-DC conversion circuit 206 can receive a DC power output from a power board (not shown), for example, a 24V DC voltage, and convert it to a DC operating voltage of the backlight module 20, such as a 60V DC voltage, to provide power to the backlight module 20.
- the backlight module 20 includes a backlight 201 and a backlight driving circuit 202 disposed on the source driving board 105.
- the backlight 201 receives the control of the backlight driving circuit 202 and the power supply to perform corresponding brightness performance.
- the backlight 201 can pass through a flexible cable (flexible Flat cable, The FFC) and the power line are electrically connected to the source driver board 105.
- the backlight module 20 further includes an optical film set 203.
- the backlight 201 is disposed sideways on the side of the optical film set 203.
- the optical film set 203 may include an optical film such as a light guide plate and a diffusion sheet.
- the backlight 201 can be, for example, a light emitting diode (light) The illuminating strip, but the present invention is not limited thereto, and it may also be a cold cathode fluorescent tube or the like.
- the backlight 201 of the present invention The optical film group 203 is not limited to the above-described side light type configuration, and it can also be used in a direct type configuration (that is, the backlight is disposed directly under the optical film group).
- the display device and the source driving board of the present invention integrate the backlight driving circuit 202 on the source driving board 105, so that the source can be sourced by the DC-DC conversion circuit 206 disposed on the source driving board 105.
- the input voltage of the pole driving board 105 is converted to a DC operating voltage of the backlight module 20, for example, a DC voltage of 60 V, to supply power to the backlight module 20; since the backlight driving circuit 202 is integrated on the source driving board 105, the space of the source driving board 105 is made. It can be fully utilized, saving space and reducing the use of a printed circuit board, thereby reducing manufacturing costs.
Description
Claims (10)
- 一种显示装置,包括:显示模块,包括非自发光显示面板、源极驱动电路及源极驱动板,所述源极驱动电路电连接于所述源极驱动板与所述非自发光显示面板之间并接受所述源极驱动板的控制驱动所述非自发光显示面板进行图像显示;以及背光模块,包括背光源及背光源驱动电路,所述背光源驱动电路驱动所述背光源;其特征在于,所述背光源驱动电路整合于所述源极驱动板上。
- 根据权利要求1所述的显示装置,其特征在于,所述非自发光显示面板为液晶显示面板。
- 根据权利要求1所述的显示装置,其特征在于,所述源极驱动板上还设置有伽玛电压产生器,与所述源极驱动电路电连接。
- 根据权利要求1所述的显示装置,其特征在于,所述源极驱动电路包括至少一个柔性电路板,所述柔性电路板上设置有源极驱动芯片。
- 根据权利要求1、3或4所述的显示装置,其特征在于,所述背光源驱动电路包括恒流源电路及直流对直流转换电路。
- 根据权利要求1所述的显示装置,其特征在于,所述背光模块包括光学膜片组,所述背光源以侧光方式设置在所述光学膜片组的侧边。
- 根据权利要求1所述的显示装置,其特征在于,所述背光源为发光二极管灯条。
- 一种源极驱动板,应用于显示装置,所述显示装置包括非自发光显示面板、源极驱动电路以及背光源,所述源极驱动电路通过所述源极驱动板电连接至所述非自发光显示面板并接受所述源极驱动板的控制驱动所述非自发光显示面板进行图像显示,其特征在于,所述源极驱动板上设置有背光源驱动电路,用于驱动所述背光源。
- 根据权利要求8所述的源极驱动板,其特征在于,所述背光源驱动电路包括恒流源电路及直流对直流转换电路。
- 根据权利要求8或9所述的源极驱动板,其特征在于,所述源极驱动板上还设置伽玛电压产生器,与所述源极驱动电路电连接。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201020521183.9 | 2010-09-08 | ||
CN2010205211839U CN201877109U (zh) | 2010-09-08 | 2010-09-08 | 显示装置及源极驱动板 |
Publications (1)
Publication Number | Publication Date |
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WO2012031504A1 true WO2012031504A1 (zh) | 2012-03-15 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/CN2011/077255 WO2012031504A1 (zh) | 2010-09-08 | 2011-07-18 | 显示装置及源极驱动板 |
Country Status (2)
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CN (1) | CN201877109U (zh) |
WO (1) | WO2012031504A1 (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201877109U (zh) * | 2010-09-08 | 2011-06-22 | 海尔集团公司 | 显示装置及源极驱动板 |
CN103035217A (zh) * | 2011-10-10 | 2013-04-10 | 吴小平 | 一种扫描式侧供光lde背光源的液晶显示面板 |
TWI488171B (zh) * | 2013-04-17 | 2015-06-11 | Benq Corp | 顯示裝置之影像處理方法及其顯示裝置 |
CN106023915B (zh) * | 2016-05-26 | 2018-08-07 | 深圳市华星光电技术有限公司 | 控制电路及显示装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060284816A1 (en) * | 2005-06-21 | 2006-12-21 | Lg Philips Lcd Co., Ltd. | Apparatus and method for driving image display device |
KR20080015732A (ko) * | 2006-08-16 | 2008-02-20 | 우 옵트로닉스 코포레이션 | 물결 파형 잡음을 줄일 수 있는 lcd 패널 구동 회로 및방법 |
CN101493604A (zh) * | 2008-01-21 | 2009-07-29 | 中华映管股份有限公司 | 液晶显示器 |
CN101778530A (zh) * | 2009-01-09 | 2010-07-14 | 京东方科技集团股份有限公司 | 驱动印刷电路板和液晶显示器 |
CN201877109U (zh) * | 2010-09-08 | 2011-06-22 | 海尔集团公司 | 显示装置及源极驱动板 |
-
2010
- 2010-09-08 CN CN2010205211839U patent/CN201877109U/zh not_active Expired - Lifetime
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2011
- 2011-07-18 WO PCT/CN2011/077255 patent/WO2012031504A1/zh active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060284816A1 (en) * | 2005-06-21 | 2006-12-21 | Lg Philips Lcd Co., Ltd. | Apparatus and method for driving image display device |
KR20080015732A (ko) * | 2006-08-16 | 2008-02-20 | 우 옵트로닉스 코포레이션 | 물결 파형 잡음을 줄일 수 있는 lcd 패널 구동 회로 및방법 |
CN101493604A (zh) * | 2008-01-21 | 2009-07-29 | 中华映管股份有限公司 | 液晶显示器 |
CN101778530A (zh) * | 2009-01-09 | 2010-07-14 | 京东方科技集团股份有限公司 | 驱动印刷电路板和液晶显示器 |
CN201877109U (zh) * | 2010-09-08 | 2011-06-22 | 海尔集团公司 | 显示装置及源极驱动板 |
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Publication number | Publication date |
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CN201877109U (zh) | 2011-06-22 |
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