CN1246822C - Automatic voltage regulator for common electrode in panel - Google Patents
Automatic voltage regulator for common electrode in panel Download PDFInfo
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- CN1246822C CN1246822C CN 03119820 CN03119820A CN1246822C CN 1246822 C CN1246822 C CN 1246822C CN 03119820 CN03119820 CN 03119820 CN 03119820 A CN03119820 A CN 03119820A CN 1246822 C CN1246822 C CN 1246822C
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- panel
- adjusting device
- voltage adjusting
- common electrode
- light
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Abstract
The present invention relates to an automatic voltage regulator for common electrodes in a panel, which comprises a light sensing device, a photoelectric conversion integrated circuit, a memory which can be repeatedly written in, and a voltage regulating circuit, wherein a plurality of photodiodes can be arranged in the light sensing device and are used for receiving light rays emitted from a panel and correspondingly generating a group of light signals; the photoelectric conversion integrated circuit is used for processing the group of light signals into electric signals which are repeatedly written in the memory as a basis of voltage regulation of common electrodes; subsequently, the electric signals are computed for generating regulating signals; then, the voltage regulator is loaded on the regulating signals for making the voltage regulator automatically regulate common voltage of a panel to the optimal effect according to the regulating signals.
Description
Technical field
The present invention relates to a kind of voltage adjusting device, and particularly relate to a kind of robotization common electrode in panel voltage adjusting device.
Background technology
In recent years LCD (liquid crystal display, LCD) manufacturing technology of panel is advanced by leaps and bounds, but a few years time, just by 3.5 generations, 4 generation factory enter 5 generation factory scale.Panel technology is gradually ripe at present, and size is also done bigger and bigger, done thinner and thinner; But produced many difficult problems of demanding urgently overcoming also along with technology improves, except qualification rate was waited to improve, how carrying out the optimization adjustment before the product export also was one of important topic to be solved.
Please refer to Fig. 1, it illustrates the synoptic diagram of adjusting common electrode in panel voltage traditionally with manual mode, and wherein panel 110 for example is a panel of LCD.As shown in the figure, panel 110 is positioned on the worktable TB, and public electrode voltages is adjusted with manual mode by operating personnel 10.For instance, panel 110 is behind burn-in test (aging test), can carry out common electric voltage (common voltage) adjustment with demonstration situation, the limit of sight check panel 110 under flicker pattern (flicker pattern) with manual mode by operating personnel 10 limits, the display effect of panel 110 integral body is reached unanimity.Normally utilize knob to adjust common electric voltage, because the adjustment hole of panel generally is front, side or the rear that is positioned at panel 110 when design, so be approximately the length (less than 1 meter, varying with each individual approximately) of adjustment person's arm apart from r during manual adjustment between operating personnel 10 and the panel 110; In other words, owing to be subject to the length of hand, the visual range between operating personnel 10 and the panel 110 also is no more than 1 meter mostly.Thus, in the adjustment process of large size panel, the visual field only can be covered in the subregion of panel, can't popularize in each corner; Also,, influenced the result of product optimization adjustment so just often attend to one thing and lose sight of another during adjustment because limit to some extent in the visual field.
Summary of the invention
In view of this, purpose of the present invention is providing a kind of automatic common electrode in panel voltage adjusting device exactly, emphasizes that replacing conventional manual in adjustment mode automatically fast and accurately adjusts mode, makes the requirement of product quality conformance with standardization.
According to purpose of the present invention, a kind of automatic common electrode in panel voltage adjusting device is proposed, this automatic common electrode in panel voltage adjusting device comprises light sensing apparatus, opto-electronic conversion integrated circuit, can repeat write store and voltage adjustment circuit.Light sensing apparatus is configurable before panel, is used for the brightness of sensing panel to change situation.On the practice, can in light sensing apparatus, dispose a plurality of optical diodes and come from the light of panel with reception, after brightness that light sensing apparatus senses panel changes, can correspondingly produce one group of light signal.Utilize the opto-electronic conversion integrated circuit to handle this group light signal and load after for electric signal and can repeat write store, promptly can be used as the foundation that public electrode voltages is adjusted.Then in addition computing and produce the adjustment signal then will be adjusted the signal loading voltage adjusting device, can make voltage adjusting device adjust the common electric voltage of panel automatically to optimum efficiency according to the adjustment signal.
According to purpose of the present invention, a kind of automatic common electrode in panel voltage adjusting device is proposed, in order to adjust the public electrode voltages of a panel, this automatic common electrode in panel voltage adjusting device comprises: a light sensing apparatus, isolation configuration produces a light signal in this panel place in order to the light of dispersing according to this panel; One opto-electronic conversion integrated circuit is coupled to this light sensing apparatus, in order to export an electric signal according to this light signal; One can repeat write store, is coupled to this opto-electronic conversion integrated circuit, adjusts signal in order to produce one according to this electric signal; And a voltage adjusting device, be coupled to this and can repeat write store, in order to adjust the public electrode voltages of this panel according to this adjustment signal.
According to purpose of the present invention, a kind of automatic common electrode in panel voltage adjusting device is also proposed, in order to adjust the public electrode voltages of a panel, this automatic common electrode in panel voltage adjusting device comprises: a light sensing apparatus, isolation configuration is in this panel place, this light sensing apparatus comprises a plurality of optical diodes of arranging with matrix form, produces a light signal in order to the light of dispersing according to this panel; One opto-electronic conversion integrated circuit is coupled to described optical diode, in order to export an electric signal according to this light signal; One can repeat write store, is disposed in this panel and with this opto-electronic conversion integrated circuit to couple, and adjusts signal in order to produce one according to this electric signal; And one press adjusting gear, is disposed in this panel and can repeats write store with this to couple, in order to adjust the public electrode voltages of this panel according to this adjustment signal.
Automatic common electrode in panel voltage adjusting device of the present invention has the following advantages at least:
One, can effectively solve the difficult problem of manual adjustment of large size panel;
Two, utilizing light sensing apparatus to measure panel luminance, is the error that observation station causes to avoid the people, makes the neat homogeneous of product quality.
Description of drawings
Fig. 1 illustrates the synoptic diagram of adjusting panel luminance traditionally with manual mode.
Fig. 2 illustrates the common electrode in panel voltage adjusting device synoptic diagram according to a preferred embodiment of the present invention.
The drawing reference numeral explanation
10: operating personnel
110: panel
210: light sensing apparatus
215: optical diode
230: the opto-electronic conversion integrated circuit
250: can repeat write store
270: voltage adjusting device
TB: worktable
R: distance
LS: light signal
ES: electric signal
ADJ: adjust signal
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and be described with reference to the accompanying drawings as follows.
Conception of the present invention, be the light that utilizes light sensing apparatus to come the sensing panel to disperse out, because light sensing apparatus can produce corresponding light signal after accepting irradiate light, so light signal can be converted to after the electric signal as the foundation of adjustment panel common electric voltage, make the result of panel common electric voltage adjustment have consistance.Please refer to Fig. 2, it illustrates the panel luminance adjusting gear synoptic diagram according to a preferred embodiment of the present invention, and wherein panel 110 for example is a panel of LCD.Light sensing apparatus 210 configurable (be equipped with between the device of optical sensing subassembly and panel and still have a little distance) is in panel 110 the place aheads, is used for the brightness of sensing panel 110 to change situation.On the practice, can cooperate the physical size of various panels 110, a plurality of optical diodes of configuration (photo diode) 215 come from the light that panel 110 exhales with reception in light sensing apparatus 210.Wherein optical diode 215 can be arranged as wire or matrix form as accompanying drawing, its quantity also can increase and decrease to some extent according to panel size, also can add several optical diodes 215 at the key area (for example central authorities) of panel 110, the collocation signal Processing is to improve key area shared weight (weight) in measured value.Moreover, because changing, the flicker of optical diode 215 counter plates 110 has extraordinary synchronous detection effect, therefore can very accurately reflect the variation situation of panel luminance, with as self-adjusting reliable basis.
Can corresponding one group of light signal LS of generation after the brightness that light sensing apparatus 210 senses panel 110 changes, after then utilizing opto-electronic conversion integrated circuit 230 that light signal LS is converted to electric signal ES, electric signal ES feed-in can be able to be repeated to write the foundation that (programmable) storer 250 is adjusted as public electrode voltages; Wherein electric signal ES can be the signal that meets RS-232 specification or 12C specification, but does not exceed with above-mentioned specification in actual applications.
It is configurable in panel 110 Circuits System with voltage adjusting device 270 to repeat write store 250, after can repeating write store 250 and receiving electric signal ES, can repeat write store 250 can be according in addition computing of electric signal ES, and produces voltage adjustment signal ADJ.Then can repeat write store 250 with voltage adjustment signal ADJ on-load voltage ratio adjuster 270 after, can make voltage adjusting device 270 according to adjusting the common electric voltage (commonvoltage) that signal ADJ adjust panels, realize self-adjusting goal of the invention.
On the practice, the common electric voltage value the when research staff can learn that by experiment panel shows that situation is best earlier is set in this common electric voltage value then and can repeats in the write store 250.After can repeating write store 250 to receive electric signal ES can with its therewith setting value relatively, to produce the usefulness of suitable adjustment signal ADJ when adjusting again as common electric voltage.For instance, when panel brightness changes about the less or brightness change profile of situation when unequal, the light signal LS that light sensing apparatus 210 is sensed a little less than, so electric signal ES wave amplitude is also less.After can repeating write store 250, electric signal ES feed-in compared with the default value of common electric voltage, the actual common electric voltage value that can learn panel is higher or on the low side, so can repeat write store 250 promptly exportable-adjust signal ADJ to voltage adjusting device 270 to change common electric voltage, allow the panel display effect meet expection.
In sum; though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; can do various changes and retouching, so protection scope of the present invention is looked the accompanying Claim scope and is defined.
Claims (10)
1. automatic common electrode in panel voltage adjusting device, in order to adjust the public electrode voltages of a panel, this automatic common electrode in panel voltage adjusting device comprises:
One light sensing apparatus, isolation configuration produces a light signal in this panel place in order to the light of dispersing according to this panel;
One opto-electronic conversion integrated circuit is coupled to this light sensing apparatus, in order to export an electric signal according to this light signal;
One can repeat write store, is coupled to this opto-electronic conversion integrated circuit, adjusts signal in order to produce one according to this electric signal; And
One voltage adjusting device is coupled to this and can repeats write store, in order to adjust the public electrode voltages of this panel according to this adjustment signal.
2. automatic common electrode in panel voltage adjusting device as claimed in claim 1, wherein this can repeat write store and this voltage adjusting device is disposed in this panel.
3. automatic common electrode in panel voltage adjusting device as claimed in claim 2, wherein this light sensing apparatus comprises a plurality of optical diodes.
4. automatic common electrode in panel voltage adjusting device as claimed in claim 3, wherein this electric signal meets the RS-232 specification.
5. automatic common electrode in panel voltage adjusting device as claimed in claim 3, wherein this electric signal meets the I2C specification.
6. automatic common electrode in panel voltage adjusting device as claimed in claim 3, wherein this panel is a panel of LCD.
7. automatic common electrode in panel voltage adjusting device as claimed in claim 1, wherein this light sensing apparatus comprises a plurality of optical diodes of arranging with matrix form; And this can repeat write store and this voltage adjusting device is configured in this panel.
8. automatic common electrode in panel voltage adjusting device as claimed in claim 7, wherein this electric signal meets the RS-232 specification.
9. automatic common electrode in panel voltage adjusting device as claimed in claim 7, wherein this electric signal meets the I2C specification.
10. automatic common electrode in panel voltage adjusting device as claimed in claim 7, wherein this panel is a panel of LCD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03119820 CN1246822C (en) | 2003-03-04 | 2003-03-04 | Automatic voltage regulator for common electrode in panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03119820 CN1246822C (en) | 2003-03-04 | 2003-03-04 | Automatic voltage regulator for common electrode in panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1527275A CN1527275A (en) | 2004-09-08 |
| CN1246822C true CN1246822C (en) | 2006-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03119820 Expired - Fee Related CN1246822C (en) | 2003-03-04 | 2003-03-04 | Automatic voltage regulator for common electrode in panel |
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| Country | Link |
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| CN (1) | CN1246822C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8184113B2 (en) | 2008-04-18 | 2012-05-22 | Innocom Technology (Shenzhen) Co., Ltd. | Method for adjusting common voltage of liquid crystal display device |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100419847C (en) * | 2005-03-25 | 2008-09-17 | 联想(北京)有限公司 | Display device and display method |
| CN100414361C (en) * | 2005-12-17 | 2008-08-27 | 群康科技(深圳)有限公司 | Liquid-crystal display panel and its voltage adjustment |
| CN101187734B (en) * | 2006-11-15 | 2011-02-09 | 群康科技(深圳)有限公司 | Liquid crystal display manufacture method |
| CN101303491B (en) * | 2007-05-11 | 2010-04-07 | 群康科技(深圳)有限公司 | Liquid crystal display apparatus and drive method thereof |
| CN101312014B (en) * | 2007-05-25 | 2010-08-25 | 群康科技(深圳)有限公司 | Liquid crystal display device and driving method thereof |
| CN101383130B (en) * | 2007-09-07 | 2010-12-08 | 北京京东方光电科技有限公司 | Lcd |
| CN101577096B (en) * | 2008-05-07 | 2011-07-27 | 群康科技(深圳)有限公司 | Method for adjusting common voltage of liquid crystal display device |
| CN102645593B (en) * | 2011-03-31 | 2014-05-21 | 京东方科技集团股份有限公司 | Method and device for determining public electrode voltage of liquid crystal display |
| CN102645771B (en) * | 2012-04-13 | 2014-12-17 | 华映视讯（吴江）有限公司 | Vcom adjusting method and device for liquid crystal panel |
| CN103761951B (en) | 2013-12-31 | 2016-03-30 | 深圳市华星光电技术有限公司 | A kind of self-adaptation multi-region common electric voltage adjustment System and method |
| CN113112939B (en) * | 2021-04-02 | 2023-10-17 | 深圳市华星光电半导体显示技术有限公司 | Voltage compensation method and device for display device and display device |
-
2003
- 2003-03-04 CN CN 03119820 patent/CN1246822C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8184113B2 (en) | 2008-04-18 | 2012-05-22 | Innocom Technology (Shenzhen) Co., Ltd. | Method for adjusting common voltage of liquid crystal display device |
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| Publication number | Publication date |
|---|---|
| CN1527275A (en) | 2004-09-08 |
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