Back light lamp and display device having this device, method for driving and adjusting the device
A backlight, image display panel technology, applied in optics, nonlinear optics, static indicators, etc., can solve the problems of uneven chromaticity and uneven brightness, and achieve the effect of uniform performance and excellent performance.
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Embodiment approach 1
[0065] Below, refer to Figure 1- Figure 11 Embodiment 1 of the present invention will be described.
[0066] First, a schematic configuration of a liquid crystal display device (display device) 1 according to the present embodiment will be described with reference to FIGS. 1( a ) and 1 ( b ). The liquid crystal display device 1 has a liquid crystal unit 2, a backlight 3, an internal housing 4, a backlight control unit (control unit) 5, and a driving and power supply circuit 6, and the liquid crystal units are arranged in order from the front side to the back side of the liquid crystal display device 1. 2. A backlight 3 , an internal housing 4 , a backlight control unit (control unit) 5 , and a driving and power supply circuit 6 .
[0067] Among the constituent elements of the above-mentioned liquid crystal display device 1 , the liquid crystal unit 2 and the drive and power supply circuit 6 can adopt the prior art liquid crystal unit and drive and power supply circuit.
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Embodiment approach 2
[0130] Next, Embodiment 2 of the present invention will be described based on FIG. 12 .
[0131] Compared with Embodiment 1 above, this embodiment differs mainly in that a temperature sensor 31j is additionally provided on the backlight substrate 31, a temperature characteristic data memory 51g is additionally provided on the control substrate 51, and a temperature characteristic data memory 51g is additionally provided on the control substrate 51. Each functional block on 51 is controlled based on the detection result of the color sensor 31a and the detection result of the temperature sensor 31j.
[0132] Therefore, below, the above-mentioned difference will be mainly explained. Components having functions corresponding to components in Embodiment 1 are assigned the same reference numerals.
[0133] A temperature sensor 31 j is mounted on the backlight board 31 . The temperature sensor 31j detects the temperature of the backlight substrate 31 at its position, and outputs a ...
Embodiment approach 3
[0234] In this embodiment, an integrated circuit element 187 is arranged on the front surface of the block 180 . In addition, the configuration and number of LED groups vary.
[0235] Figure 21 It is a sectional view of the block 180 of this embodiment. The integrated circuit element 187 is disposed on the front surface of the base substrate 180A, and the highly reflective member 121 is provided so as to cover the integrated circuit element 187 . The high reflective member 121 functions to reflect upwardly the light emitted in the lateral direction by the LED chips 104 constituting each LED group, and to reflect again the light returned to the substrate by the diffusion sheet 122 (not shown). In addition, the connectors 113 and cables 116 between the connection blocks 180 are also covered by the highly reflective member 121 .
[0236] Since the structure in which the casing 120 is in direct contact with the back of the block 180 is adopted, a good heat dissipation effect c...
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