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Backlight subassembly and its color sensing device

A technology of a sensing device and a backlight assembly, which is applied to a color measurement device, a radiation control device, and color measurement using an electrical radiation detector, etc., can solve the problem that the color sensor 160 cannot operate normally.

Inactive Publication Date: 2008-09-17
CHUNGHWA PICTURE TUBES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if the existing color sensor 160 is still used, the light intensity in the backlight assembly 100 will exceed the working range of the photodiode, causing the color sensor 160 to fail to operate normally.

Method used

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  • Backlight subassembly and its color sensing device
  • Backlight subassembly and its color sensing device
  • Backlight subassembly and its color sensing device

Examples

Experimental program
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Effect test

Embodiment Construction

[0033] figure 2 It is a schematic cross-sectional view of a backlight assembly according to an embodiment of the present invention. Please refer to figure 2, the backlight assembly 200 of this embodiment includes a light box 210 , a color sensing device 220 , a plurality of point light sources 230 and a diffuser plate 250 . The light box 210 has a bottom 212 and a light emitting section 214 opposite to each other. The diffusion plate 250 is disposed at the light exit section 214 , and the color sensing device 220 and the point light source 230 are disposed at the bottom 212 of the light box. More specifically, in this embodiment, the color sensing device 220 and the point light sources 230 are fixed on a circuit board 260 disposed on the bottom 212 of the light box. In addition, the point light source 230 is, for example, a light emitting diode, and the point light source 230 may include a plurality of point light sources with different light emitting colors, such as a re...

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Abstract

The invention discloses a backlight assembly comprising a lamphouse, a color sensing device, a plurality of point light sources, a control unit and a proliferation plate. The lamphouse has an opposite bottom and a light emitting cross-section. The color sensing device is configured at bottom and comprises a sensing component, a light attenuation component and at least a lens. The sensing component has a plurality of sensing blocks. The light attenuation component is configured on upper side of the sensing component. The lens is configured on upper side of the light attenuation component. The point light sources are distributed at bottom and correspond to these sensing blocks. The control unit is electrically connected to the point light sources and the sensing component. The proliferation plate is configured at the light-outputting section. The sensing component is applied to sensing a beam color of different areas from the point light sources to the proliferation plate and outputting an electric signal to the control unit. The control unit is applied to adjusting light emitting color of the point light sources corresponding to each sensing block according to the electric signal.

Description

technical field [0001] The present invention relates to a backlight module, and in particular to a backlight module with a color compensation function and a color sensing apparatus thereof. Background technique [0002] The display is an indispensable human-machine communication interface for digital tools such as mobile phones, digital cameras, digital video cameras, and notebook computers. With the development of the industry, liquid crystal displays (liquid crystal displays, LCDs) have become the mainstream of displays. In addition, the liquid crystal display is more developed toward a larger size and is widely used in liquid crystal televisions (LCD TVs), liquid crystal monitors (LCD monitors), and the like. Since the liquid crystal display panel (LCD panel) of the liquid crystal display does not have the function of emitting light, a backlight assembly must be arranged under the liquid crystal display panel to provide a display light source to achieve the display funct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/46G01J3/51H01L27/144G02F1/13357G02F1/1335
Inventor 陈宏纬吴世民黄鹏丞郭庭宸陈昱蓁莫启能
Owner CHUNGHWA PICTURE TUBES LTD
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