CN201607597U - Direct LED backlight source apparatus - Google Patents
Direct LED backlight source apparatus Download PDFInfo
- Publication number
- CN201607597U CN201607597U CN200920244926XU CN200920244926U CN201607597U CN 201607597 U CN201607597 U CN 201607597U CN 200920244926X U CN200920244926X U CN 200920244926XU CN 200920244926 U CN200920244926 U CN 200920244926U CN 201607597 U CN201607597 U CN 201607597U
- Authority
- CN
- China
- Prior art keywords
- led
- direct
- liquid crystal
- crystal panel
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The utility model relates to a direct LED backlight source apparatus used for liquid crystal displays, which comprises a liquid crystal panel (1), light-emitting diodes (LED) distributed on the liquid crystal panel (1) in a rectangular array, and a drive circuit, and is characterized in that strip-shaped LEDs (2) are arranged at the periphery of the liquid crystal panel (1) which is distributed with the light-emitting diodes (LED) in a rectangular array. As for the direct LED backlight supply apparatus, LED arrays in the up, down, left and right directions and/or non-uniformly distributed LED arrays are additionally arranged, thus improving uniformity of brightness of the direct LED backlight source.
Description
Technical field
The utility model relates to a kind of LCD LED-backlit source apparatus, particularly a kind of direct LED backlight device.
Background technology
At present, liquid crystal indicator has been widely used in the individual consumer's goods such as notebook computer, computer monitor, TV because in light weight, advantages such as volume is little, little power consumption, radiation is low, quality is good are arranged.Because LCD LCD panel itself does not have the characteristics of luminescence, therefore must on the LCD panel, add a light emitting source, can reach display effect, backlight source module promptly provides the optical module of LCD LCD backlight light source.
LCD LCD backlight source module can use light emitting diode (LED), cold-cathode fluorescence lamp (CCFL), external electrode fluorescent lamp (EFFL) etc. as light source.
The backlight of big screen LCD LCD main flow remains CCFL on the market, but along with development of semiconductor, the particularly appearance of high-power LED chip, LED brightness and efficient have had significant raising, make the LED-backlit source more and more be applied to LCD backlight in.Utilizing led light source is that panel backlight has a lot of advantages as LCD panel backlight than with common CCFL.Wherein the most tangible improvement is the expansion of colour gamut.Use LED-backlit to have broader colour gamut, realize more gorgeous color.But also can realize dynamically controlling the RGB mixed light, and between 9600K and 6500K, adjust white balance, and can sacrificing luminance and contrast.
Direct-light-type backlight, through actual measurement, it all has the intermediate luminance height, the problem that brightness all around is low, its brightness uniformity is relatively poor.Can change the density that led array is arranged, to improve the brightness uniformity of whole display device.But do like this, can obviously cause the versatility of led array accessory poor, improve the cost of manufacturing.Therefore how to improve the brightness uniformity of direct-light-type backlight, and provide a kind of novel direct LED backlight device to become present assistant officer problem to be solved.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming of traditional direct-light-type backlight brightness uniformity difference, a kind of novel direct LED backlight device is provided, this device has increased the barcode LED of upper and lower, left and right four directions, and/or the non-uniform Distribution strip than original downward back electro-optical device
] LED has realized improving the brightness uniformity of direct-light-type backlight.
The purpose of this utility model is achieved through the following technical solutions, a kind of direct LED backlight device, the LED that comprises rectangular array distribution on liquid crystal panel and the liquid crystal panel, and driving circuit, it is characterized in that: the periphery at the liquid crystal panel of the LED of this rectangular array distribution has barcode LED.
The barcode LED of described periphery is mutual LED coupled in series, and this barcode LED structure that is evenly distributed.
The adjacent both sides of its rectangular array of barcode LED of the described periphery structure that is symmetrically distributed each other.
Described barcode LED adopts the RGB LED of high colour gamut.
Characteristics of the present utility model are: with respect to traditional direct-light-type backlight intermediate luminance height, the low existing defective of its brightness uniformity difference that causes of brightness all around, this device adopts the barcode LED that has increased the upper and lower, left and right four directions at the periphery of the liquid crystal board of original downward back electro-optical device, and/or the non-uniform Distribution barcode LED, make the brightness uniformity of direct-light-type backlight improve.
And the periphery barcode LED of the LCD backlight template of the LED of this rectangular array distribution can carry out the measurement of light intensity attenuation curve respectively to it in level and vertical direction, and draw out its light intensity attenuation curve.According to the inverse ratio of light intensity attenuation curve, determine the distribution density of barcode LED then.According to the above barcode LED that obtains or directly adopt equally distributed barcode LED, be installed in the four direction of liquid crystal panel respectively, can obtain novel direct LED backlight device.
This novel direct LED backlight device can be adjusted the density of barcode LED as required, thereby carries out the brightness adjustment of segmentation, to improve the brightness uniformity of direct-light-type backlight.Simultaneously, can also adopt the RGB LED of high colour gamut to form the barcode LED on the four direction of upper and lower, left and right, at lower cost, improve the colour gamut of entire liquid crystal display device.
Description of drawings
Fig. 1 is the traditional structure screen at vertical and horizontal direction light intensity curve map roughly;
Fig. 2 is traditional direct LED backlight structure;
Fig. 3 is the utility model direct LED backlight device embodiment one structural representation.
Fig. 4 is the utility model direct LED backlight device embodiment two structural representations.
Embodiment
Come the utility model is done further detailed explanation below in conjunction with accompanying drawing:
As shown in Figure 1, at present common direct LED backlight device screen at vertical and horizontal direction light intensity curve figure, as can be seen from the figure, the intermediate luminance height of traditional backlight arrangement, brightness is all around hanged down and is caused its brightness uniformity poor.Figure 2 shows that traditional backlight source apparatus led array arrangement mode, apparent in its shortcoming.
As shown in Figure 3, be first kind of embodiment of the present utility model.On the basis of original ordinary straight light type LED backlight source apparatus, equally distributed barcode LED 2 evenly is installed in respectively on the periphery of four direction up and down of liquid crystal panel 1, can obtain novel direct LED backlight device.This barcode LED 2 is mutual LED coupled in series.
As shown in Figure 4, be second kind of embodiment of the present utility model.On the basis of original ordinary straight light type LED backlight source apparatus, light intensity attenuation degree according to light guide plate, determine the barcode LED 2 of distribution symmetrically, promptly adopt on the LED-backlit source apparatus of rectangular structure be parallel to each other up and down or about the form of symmetric arrangement on vertical two limits mutually, on any adjacent both sides on one side are the structures that are symmetrically distributed each other, then this barcode LED 2 is installed in the four direction up and down of liquid crystal panel 1 respectively, can obtains novel direct LED backlight device.
The utility model barcode LED 2 can also adopt any arrangement form at the four direction up and down of liquid crystal panel 1.
For solving the relatively poor problem of original direct-light-type backlight brightness uniformity, can carry out the measurement of light intensity attenuation curve respectively to it in level and vertical direction, and draw out its light intensity attenuation curve.According to the inverse ratio of light intensity attenuation curve, determine the distribution density of strip LE row then.To improve the brightness uniformity of direct-light-type backlight.
The LED that selects for use on the barcode LED 2 can be identical with the LED of straight-down negative, also can use the super bright LED of LED/ of better wide colour gamut, i.e. the RGB LED of high colour gamut.Can on the basis of lower cost, realize the better gamut/brightness of display like this.
Need to prove that the sequencing of numerical value among the present embodiment figure and four direction LED design only is used to illustrate the utility model, but is not used for limiting practical range of the present utility model.And different numerical value can appear in quantity of other brightness, size or the like, and all these embodiment are in scope of the present utility model.
Claims (4)
1. direct LED backlight device, comprise that liquid crystal panel (1) reaches the LED of going up rectangular array distribution at liquid crystal panel (1), and driving circuit, it is characterized in that: the periphery of the liquid crystal panel of the LED of this rectangular array distribution (1) has barcode LED (2).
2. a kind of direct LED backlight device according to claim 1 is characterized in that: described barcode LED (2) is mutual LED coupled in series, and this barcode LED (2) structure that is evenly distributed.
3. a kind of direct LED backlight device according to claim 1 is characterized in that: described barcode LED (2) is symmetrically distributed each other on the adjacent both sides of rectangular array.
4. a kind of direct LED backlight device according to claim 1 is characterized in that: described barcode LED (2) adopts the RGB LED of high colour gamut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920244926XU CN201607597U (en) | 2009-10-27 | 2009-10-27 | Direct LED backlight source apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920244926XU CN201607597U (en) | 2009-10-27 | 2009-10-27 | Direct LED backlight source apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201607597U true CN201607597U (en) | 2010-10-13 |
Family
ID=42952302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920244926XU Expired - Fee Related CN201607597U (en) | 2009-10-27 | 2009-10-27 | Direct LED backlight source apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201607597U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557721A (en) * | 2018-12-21 | 2019-04-02 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
| CN110888252A (en) * | 2019-12-05 | 2020-03-17 | 黄剑鸣 | Array type aperture structure and camera electronic equipment |
| US10732456B2 (en) | 2017-05-16 | 2020-08-04 | Htc Corporation | Display device with different element densities and direct-type backlight thereof |
| WO2021074061A1 (en) * | 2019-10-15 | 2021-04-22 | Continental Automotive Gmbh | Display system and method for operating a display system |
-
2009
- 2009-10-27 CN CN200920244926XU patent/CN201607597U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10732456B2 (en) | 2017-05-16 | 2020-08-04 | Htc Corporation | Display device with different element densities and direct-type backlight thereof |
| CN109557721A (en) * | 2018-12-21 | 2019-04-02 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
| CN109557721B (en) * | 2018-12-21 | 2022-01-07 | 厦门天马微电子有限公司 | Backlight module and display device |
| WO2021074061A1 (en) * | 2019-10-15 | 2021-04-22 | Continental Automotive Gmbh | Display system and method for operating a display system |
| KR20220050955A (en) * | 2019-10-15 | 2022-04-25 | 콘티넨탈 오토모티브 게엠베하 | Display systems and how they work |
| KR102641105B1 (en) | 2019-10-15 | 2024-02-27 | 콘티넨탈 오토모티브 게엠베하 | Display systems and how they work |
| CN110888252A (en) * | 2019-12-05 | 2020-03-17 | 黄剑鸣 | Array type aperture structure and camera electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101554090A (en) | Backlight device, and display employing the same | |
| CN105869598A (en) | Driving method of LCD (Liquid Crystal Display) and LCD | |
| CN102620193A (en) | Sectional light emitting diode (LED) backlight module and liquid crystal display device | |
| CN101338878A (en) | Color temperature adjustable high brightness LED backlight module | |
| CN201607597U (en) | Direct LED backlight source apparatus | |
| CN101556401B (en) | Liquid crystal display device | |
| CN101581420B (en) | Direct backlight formed by the arrangement of LEDs with gradually changed distance | |
| CN101435947A (en) | Arrangement mode of LED backlight module unit and LED liquid crystal backlight screen | |
| CN103035205A (en) | Active type dynamic light emitting diode (LED) backlight module applied to large screen liquid crystal display (LCD) | |
| CN101737670A (en) | Direct-side lighting combined hybrid backlight | |
| KR20100006298A (en) | Led organization method for liquid crystal display module | |
| CN101354875A (en) | LED backlight drive method for liquid crystal | |
| CN203384791U (en) | Backlight source module | |
| CN202327857U (en) | High-brightness and ultra-thin backlight source | |
| CN204790247U (en) | Liquid crystal disply device and component base plate thereof | |
| CN201748359U (en) | Direct type light-emitting diode (LED) backlight source device | |
| CN201449505U (en) | Backlight source apparatus for LCD | |
| CN202065814U (en) | Light emitting diode backlight source and liquid crystal display thereof | |
| CN102720990A (en) | Lateral type light-emitting diode (LED) backlight module with glass light guide plate | |
| CN201425684Y (en) | Novel side-light LED backlight device | |
| CN202647412U (en) | Glass light guide plate side-entering type light-emitting diode (LED) backlight module | |
| CN101963313A (en) | One-dimensional edge light dynamic backlight for liquid crystal display | |
| CN201314991Y (en) | Light source array structure of LED backlight module | |
| CN201788335U (en) | Direct-type liquid crystal module using high-power LED as light source | |
| CN202647411U (en) | Novel glass light guide plate lateral entering type LED (light emitting diode) backlight module |
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: 20101013 Termination date: 20151027 |
|
| EXPY | Termination of patent right or utility model |