WO2015096383A1 - 光源发光特性检测装置 - Google Patents
光源发光特性检测装置 Download PDFInfo
- Publication number
- WO2015096383A1 WO2015096383A1 PCT/CN2014/078572 CN2014078572W WO2015096383A1 WO 2015096383 A1 WO2015096383 A1 WO 2015096383A1 CN 2014078572 W CN2014078572 W CN 2014078572W WO 2015096383 A1 WO2015096383 A1 WO 2015096383A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light source
- detection device
- light
- present
- shell plate
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/0223—Sample holders for photometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J2001/4247—Photometry, e.g. photographic exposure meter using electric radiation detectors for testing lamps or other light sources
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J2001/4247—Photometry, e.g. photographic exposure meter using electric radiation detectors for testing lamps or other light sources
- G01J2001/4252—Photometry, e.g. photographic exposure meter using electric radiation detectors for testing lamps or other light sources for testing LED's
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
- G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
- G01J3/505—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors measuring the colour produced by lighting fixtures other than screens, monitors, displays or CRTs
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0693—Calibration of display systems
Definitions
- Embodiments of the present invention relate to a light source luminescence characteristic detecting apparatus. Background technique
- TFT-LCD Thin Film Transistor-Liquid Crystal Display
- the backlight module mainly includes a light bar, a reflective sheet, a light guide plate, an optical film, a plastic frame, a back plate, etc.; the light-emitting diode (LED) light bar has a small volume, a low operating voltage, and a small operating current.
- the illumination is uniform and stable, the response speed is fast, and the service life is long. Therefore, the backlight module usually adopts an LED light bar; the LED light bar is formed by a plurality of LED light sources arranged in a certain pattern.
- the test for white balance of display modules is one of them.
- the display module white balance is largely determined by the spectrum of the light source in the backlight module.
- each type of LED strip emits a different light language, so you need to select the desired type of LED strip. It is usually tested with the completed LED strips, which mainly detect the spectral characteristics of the LED strips to select the LED strips of the desired chroma and brightness levels.
- LED strips have a long manufacturing cycle, usually 1 to 2 weeks, and because of the need to select different LED strips for retesting, this can easily lead to an extension of the development cycle of the entire LCD. Summary of the invention
- At least one embodiment of the present invention provides a detecting device capable of detecting a light emitting characteristic for a light source, comprising: a positioning mechanism for fixing a light source; and detecting a parameter of the light emitted by the light source Measuring equipment.
- the light source illuminating characteristic detecting apparatus provided by at least one embodiment of the present invention can detect the illuminating characteristics of the light source by providing a detecting device for fixing the light source positioning mechanism and for collecting the light source outputting light parameters, thereby facilitating selection
- the chromaticity and brightness level of the light source required for the display module can shorten the development cycle of the liquid crystal display.
- FIG. 1 is a schematic top plan view of a light source luminescence characteristic detecting device according to an embodiment of the present invention
- FIG. 2 is a side view showing a light source luminescence characteristic detecting device according to an embodiment of the present invention.
- 1 Shell plate; 2: LED light source; 21: Base; 22: Light-emitting part; 3: Positioning block; 4: Spring; 5: Stop; 6: Reflector; detailed description
- the inventor has noticed that if the white balance test can be performed using an LED light source to help select the chromaticity and brightness level of the LED strip required for the display module, the development cycle of the liquid crystal display can be shortened to some extent.
- the light source luminescence characteristic detecting apparatus includes: a positioning mechanism and a detecting device.
- the detecting device may also include a portion such as a power supply device.
- the positioning mechanism is mainly used for fixing the light source
- the power supply device is mainly used for supplying power to the light source
- the detecting device is mainly used for collecting the light output parameter of the light source;
- the light source is fixed by the positioning mechanism, and the power source is used to supply the light source, so that the light source starts to emit light,
- the light source is emitted by the detecting device, thereby realizing the light source
- the luminescence characteristic is detected.
- the embodiments of the present invention are applicable to detecting a light-emitting characteristic of a small number of light sources, such as a single light source, thereby helping to select the chromaticity and brightness level of the light source required by the display module, and shortening the development cycle of the liquid crystal display.
- the light source luminescence characteristic detecting apparatus provided by at least one embodiment of the present invention will be described in detail below with reference to Figs. 1 and 2.
- the LED light source 2 in this embodiment includes a base 21 and a light emitting portion 22 disposed above the base 21;
- the susceptor 21 includes, for example, a printed circuit board (PCB), and the illuminating portion 22 includes, for example, an LED chip, which may be directly formed on the PCB.
- the light source illuminating characteristic detecting device further includes a packaged shell plate 1 for The other components are positioned or fixed; the material of the shell 1 can be a high-strength metal material, for example, can be formed by stamping high-quality stainless steel.
- the positioning mechanism in the embodiment of the present invention may have various implementation manners.
- two opposite positioning blocks 3 may be disposed on the shell plate 1; the LED light source is directly used by the two positioning blocks 3 2 positioning; however, the use of the two positioning blocks 3 may cause damage to the LED light source 2, and it is not possible to simultaneously position the LED light sources 2 of various sizes; therefore, the positioning mechanism in at least one embodiment of the present invention
- a buffer unit connected to the positioning block 3 is also included. By buffering the buffer unit, damage to the LED light source 2 is avoided, and at the same time, a plurality of LED light sources 2 of different sizes can be positioned.
- a buffer unit implementation is provided in at least one embodiment of the invention.
- the buffer unit includes a spring 4 and a stopper 5.
- One end of the spring 4 is connected to the positioning block 3, and the other end of the spring 4 is connected to the stopper 5.
- the cover plate 1 is further covered with a reflection sheet 6, and the light emitted from the LED light source 2 is reflected by the reflection sheet 6, thereby avoiding loss of luminance of the LED light source 2.
- the reflection sheet 6 can be directly disposed on the shell plate 1, and then the entire LED light source 2 is placed above the reflection sheet 6. Since the susceptor 21 of the LED light source 2 does not reflect light well, there may still be a loss of partial brightness.
- the light-emitting portion of the LED light source 2 is opened on the reflective sheet 6. 22 shaped and position-adapted through holes, the reflective sheet 6 is covered on the base plate 1 and the base 21 of the LED light source 2, and the light emitting portion 22 of the LED light source 2 is exposed from the through hole, thereby avoiding the LED light source to the greatest extent. 2 loss of brightness.
- the light source light-emitting characteristic detecting apparatus in at least one embodiment of the present invention further includes an optical film 7 disposed above the LED light source 2.
- the optical film 7 can change the direction of the outgoing light and enhance the intensity of the outgoing light; the optical film 7 can be the same as the optical film of the backlight module in the display device.
- the optical film 7 in at least one embodiment of the present invention includes one or more of a prism film (also referred to as a prism sheet) and a diffusion film (also referred to as a diffusion sheet or a diffusion sheet).
- the prism film can concentrate the light in the normal direction, thereby improving the front brightness and brightness performance, thereby achieving the purpose of brightening, energy saving and power saving.
- the main function of the diffusion film is to scatter the emitted light to achieve the effect of atomization, so that the outgoing light is more even and soft.
- At least one embodiment of the present invention can be used with two prismatic films or two diffusing films to achieve a better optimization of the outgoing light.
- the optical film 7 forms a closed space with the shell 1 and the LED light source 2 is located in the closed space, so as to avoid the escape of the light from the LED light source 2 to the utmost extent. Scattered.
- the closed space eliminates the ambient light being doped into the light emitted by the LED light source 2, which reduces the detection error and makes the detection result more reliable.
- the test environment is, for example, a dark room, which can be maximized. To reduce the impact of ambient light to the extent, to enhance the accuracy of the test results.
- the power supply device in at least one embodiment of the present invention is located outside the closed space and can be connected to the LED light source through a lead wire, thereby preventing the power supply device from affecting the light emitted from the LED light source.
- the optical language parameters of the LED light source are the most important.
- the optical language is that the complex color light is split by a dispersion system (such as a prism or a grating), and the monochromatic light that is dispersed is wavelength (or frequency).
- the patterns arranged in order.
- the detecting device in at least one embodiment of the present invention is, for example, a flat-panel optical detector, and of course other types of detecting devices for determining other illuminating characteristic parameters of the LED light source.
- the light source illuminating characteristic detecting device provided in at least one embodiment of the present invention can conveniently and quickly detect the illuminating characteristic of the light source, and can be applied to detecting the illuminating characteristic of a single light source, thereby helping to select the display mode.
- the chromaticity and brightness level of the required light source can shorten the development cycle of the liquid crystal display.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/412,915 US10274761B2 (en) | 2013-12-23 | 2014-05-27 | Detecting device for light-emitting property of light source |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310718047.7A CN103674496B (zh) | 2013-12-23 | 2013-12-23 | 光源发光特性检测装置 |
| CN201310718047.7 | 2013-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015096383A1 true WO2015096383A1 (zh) | 2015-07-02 |
Family
ID=50312723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2014/078572 Ceased WO2015096383A1 (zh) | 2013-12-23 | 2014-05-27 | 光源发光特性检测装置 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US10274761B2 (zh) |
| CN (1) | CN103674496B (zh) |
| WO (1) | WO2015096383A1 (zh) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674496B (zh) | 2013-12-23 | 2016-05-25 | 京东方科技集团股份有限公司 | 光源发光特性检测装置 |
| CN109682577A (zh) * | 2018-12-21 | 2019-04-26 | 江门市品而亮照明有限公司 | 一种led光源恒温测试装置 |
| CN111067499A (zh) * | 2019-12-20 | 2020-04-28 | 东莞华贝电子科技有限公司 | Ppg器件测试设备 |
| KR102835265B1 (ko) * | 2021-01-22 | 2025-07-18 | 삼성디스플레이 주식회사 | 표시 모듈 검사 장치 |
| KR20220115730A (ko) * | 2021-02-10 | 2022-08-18 | 삼성디스플레이 주식회사 | 표시모듈 검사 장치 |
| JP7576192B2 (ja) * | 2022-07-29 | 2024-10-30 | 中国科学院光電技術研究所 | 照明視野の不均一性検知システム、検知方法、補正方法および装置 |
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2013
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-
2014
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- 2014-05-27 WO PCT/CN2014/078572 patent/WO2015096383A1/zh not_active Ceased
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103674496B (zh) | 2016-05-25 |
| US10274761B2 (en) | 2019-04-30 |
| CN103674496A (zh) | 2014-03-26 |
| US20160274386A1 (en) | 2016-09-22 |
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