CN203024956U - Testing instrument for response speed of LCD (Liquid Crystal Display) product - Google Patents
Testing instrument for response speed of LCD (Liquid Crystal Display) product Download PDFInfo
- Publication number
- CN203024956U CN203024956U CN 201220702983 CN201220702983U CN203024956U CN 203024956 U CN203024956 U CN 203024956U CN 201220702983 CN201220702983 CN 201220702983 CN 201220702983 U CN201220702983 U CN 201220702983U CN 203024956 U CN203024956 U CN 203024956U
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- lcd
- response speed
- backlight
- lcd product
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Abstract
The utility model discloses a testing instrument for the response speed of an LCD (Liquid Crystal Display) product. The testing instrument is characterized by comprising a cushion plate, a backlight source, supporting structures and a silicon-light battery, wherein the backlight source is arranged on the cushion plate; the supporting structures are arranged at the two sides of the backlight source; the silicon-light battery is arranged at the upper ends of the supporting structures and is provided with a light sensing circuit; the silicon-light battery is positioned above the backlight source, and the light sensing circuit is connected with an oscilloscope; and in testing, an LCD product to be tested in a flickering state is placed between the silicon-light battery and the backlight source, the backlight source keeps in a normally-on state, the light of the backlight source is transmitted to the silicon-light battery through the LCD product, the silicon-light battery converts a light signal into an electric signal and transmits the electric signal to the oscilloscope by the light sensing circuit, and the response speed of the LCD product is detected by waveform transformation of the oscilloscope. The testing instrument disclosed by the utility model is simple in structure, easy in operation, low in cost and high in testing speed and can be widely applied in the testing field of the response speed of the LCD.
Description
Technical field
The utility model relates to a kind of response speed testing tool, particularly a kind of LCD product response speed testing tool.
Background technology
Display technique is maked rapid progress, along with the speed of LCD model change is more and more faster, the client is also more and more higher to the requirement of the response speed of product, existing existing program is mainly by buying special-purpose testing tool, these instruments are somewhat expensive not only, and operates and need to professional people could operate.The time of expending during test is also long.
The so-called response time be each picture element of liquid crystal display to the speed of input signal reaction, namely pixel is bright or turn the dark needed time by bright by blackout.Less user of response time sees that dynamic menu does not more have the sensation of tail shadow towing.It is original is to apply voltage in liquid crystal cell, liquid crystal molecule is reversed and reply.The general response time is divided into two parts: rise time and fall time; What we referred to the said response time is exactly both sums.Studying carefully its principle is: give to test out the transmitance of this liquid crystal display under electric field action after voltage signal of liquid crystal display and drop to 10% and be raised to for 90% needed time by 10% by 90%.Existing response speed measuring technology be testing apparatus by specialty to liquid crystal display to a test voltage, the liquid crystal molecule in the liquid crystal display box shows the torsion of liquid crystal molecule and replys speed by the light birefringent characteristic of self.Because adopt the equipment of specialty to come test response speed, thus exist the testing tool complex structure, complex operation, cost is high, the problem that test speed is slow.
The utility model content
The purpose of this utility model is to provide a kind of LCD product response speed testing tool, solves existing LCD product response speed testing tool complex structure, complex operation, and cost is high, the problem that test speed is slow.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of LCD product response speed testing tool, comprise backing plate, be arranged on the backlight on backing plate, be arranged on the supporting construction of backlight both sides, be arranged on the silicon photocell with photosensitive circuit of supporting construction upper end, silicon photocell be positioned at backlight directly over, photosensitive circuit is connected with oscillograph; During test, the LCD product to be tested of blink states is placed between silicon photocell and backlight, backlight keeps normal bright state, the light transmission LCD product of backlight is passed to silicon photocell, silicon photocell converts light signal electric signal to and by photosensitive circuit, electric signal is passed to oscillograph, detects the response speed of LCD product by the conversion of waveform.
Preferably, described silicon photocell floorage is greater than LCD product floorage.
Preferably, the area coverage of described backlight is greater than the floorage of LCD product.
The beneficial effects of the utility model: by containing backlight, LCD, realizing the test of LCD response speed with the photosensitive circuit of silicon photocell, oscillographic testing apparatus, testing apparatus is simple in structure, and is easy to operate, and cost is low, and test speed is very fast.The silicon photocell floorage is greater than LCD product floorage, and the area coverage of backlight makes the test better effects if greater than LCD product floorage, and accurately.
The utility model is simple in structure, and is easy to operate, and cost is low, and test speed can be widely used in LCD response speed field tests soon.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
See also Fig. 1, as shown in the figure, a kind of LCD product response speed testing tool, comprise backing plate 1, be arranged on the backlight 2 on backing plate 1, be arranged on the supporting construction 3 of backlight 2 both sides, be arranged on the silicon photocell 5 with photosensitive circuit 6 of supporting construction 3 upper ends, silicon photocell 5 be positioned at backlight 2 directly over, photosensitive circuit 6 is connected with oscillograph; During test, the LCD product 4 to be tested of blink states is placed between silicon photocell 5 and backlight 2, backlight 2 keeps normal bright state, the light transmission LCD product 4 of backlight 2 is passed to silicon photocell 5, silicon photocell 5 converts light signal electric signal to and by photosensitive circuit 6, electric signal is passed to oscillograph, detects the response speed of LCD product 4 by the conversion of waveform.Described silicon photocell 5 floorages are greater than LCD product 4 floorages.The area coverage of described backlight 2 is greater than the floorage of LCD product 4.The flicker of LCD product 4 refer to LCD product 4 by secretly to bright and by bright to dark state variation.The test of response speed should be carried out in the standard darkroom, and the luminance signal test point is chosen at the center of LCD usually.Drive signal generator produce reversible flat-field signal driving display by dark to bright and by bright to secretly.
Claims (3)
1. LCD product response speed testing tool, it is characterized in that: comprise backing plate (1), be arranged on the backlight (2) on backing plate (1), be arranged on the supporting construction (3) of backlight (2) both sides, be arranged on the silicon photocell (5) of the band photosensitive circuit (6) of supporting construction (3) upper end, silicon photocell (5) be positioned at backlight (2) directly over, photosensitive circuit (6) is connected with oscillograph; During test, the LCD product to be tested (4) of blink states is placed between silicon photocell (5) and backlight (2), backlight (2) keeps normal bright state, the light transmission LCD product (4) of backlight (2) is passed to silicon photocell (5), silicon photocell (5) converts light signal electric signal to and by photosensitive circuit (6), electric signal is passed to oscillograph, detects the response speed of LCD product (4) by the conversion of waveform.
2. LCD product response speed testing tool according to claim 1, it is characterized in that: described silicon photocell (5) floorage is greater than LCD product (4) floorage.
3. LCD product response speed testing tool according to claim 1, it is characterized in that: the area coverage of described backlight (2) is greater than the floorage of LCD product (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220702983 CN203024956U (en) | 2012-12-18 | 2012-12-18 | Testing instrument for response speed of LCD (Liquid Crystal Display) product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220702983 CN203024956U (en) | 2012-12-18 | 2012-12-18 | Testing instrument for response speed of LCD (Liquid Crystal Display) product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203024956U true CN203024956U (en) | 2013-06-26 |
Family
ID=48648935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220702983 Expired - Fee Related CN203024956U (en) | 2012-12-18 | 2012-12-18 | Testing instrument for response speed of LCD (Liquid Crystal Display) product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203024956U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063405A (en) * | 2012-12-18 | 2013-04-24 | 黄山市中显微电子有限公司 | instrument used for testing response speed of liquid crystal display (LCD) product |
| CN110596483A (en) * | 2019-08-02 | 2019-12-20 | 惠州市德赛西威汽车电子股份有限公司 | Automatic test system and method for instrument response time |
-
2012
- 2012-12-18 CN CN 201220702983 patent/CN203024956U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063405A (en) * | 2012-12-18 | 2013-04-24 | 黄山市中显微电子有限公司 | instrument used for testing response speed of liquid crystal display (LCD) product |
| CN110596483A (en) * | 2019-08-02 | 2019-12-20 | 惠州市德赛西威汽车电子股份有限公司 | Automatic test system and method for instrument response time |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20151218 |
|
| EXPY | Termination of patent right or utility model |