Line structure of LED (Light Emitting Diode) lamp bars
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A technology of LED light strips and circuit structures, applied in circuit layout, lighting devices, light sources, etc., can solve problems such as no backlight
Active Publication Date: 2014-04-09
QISDA SUZHOU +1
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[0006] In view of the above problems, the present invention provides a circuit structure of LED light bars, which can avoid the disadvantage of no backlight in the entire light bar segment caused by the failure of a single LED light-emitting unit, and realize the backlight of local light bar segments Separate control switch
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[0022] In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.
[0023] Such as image 3 As shown, the circuit structure of an LED light bar in a preferred embodiment of the present invention includes four groups of light bar segments, which are respectively the first light bar segment 301, the second light bar segment 302, the third light bar segment 303 and the second light bar segment. Four light bar segments 304 . The first light bar segment 301 includes four LED light emitting units L11, L12, L13 and L14; the second light bar segment 302 includes four LED light emitting units L21, L22, L23 and L24; the third light bar segment 303 includes Four LED light emitting units L31, L32, L33 and L34; the fourth light bar segment 304 includes four LED light emitting units L41, L42, L43 and L44. The circuit structure of the LED light ba...
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Abstract
The invention provides a line structure of LED (Light Emitting Diode) lamp bars. The line structure comprises a lead and at least two groups of lamp bar sub sections. Each lamp bar sub section comprises at least two LED light emitting units. The line structure of the LED lamp bars comprises at least a serially connected LED serial line which is connected in serial at intervals and at least two serially connected LED serial lines which are connected in serial in sections. According to the line structure of the LED lamp bars provided by the invention, the serially connected LED serial line which is connected in serial at intervals and the two serially connected LED serial lines which are connected in serial in sections are combined to reduce the influence that all of the sub sections of the lamp bars are free from backlights caused by fault open circuit of one LED light emitting unit in any one sub section of the lamp bars. Furthermore, corresponding backlights of sub sections of the lamp bars can be independently controlled to turn on and off through the serially connected LED serial line of each sub section so as to elastically adjust the backlight brightness of sub sections of local lamp bars.
Description
technical field [0001] The invention relates to a display device, in particular to a circuit structure of an LED light bar backlight source. Background technique [0002] At present, the common LED light-bar design mostly adopts "segmented serial connection of LED serial lines" or "segmented series connection of LED serial lines" as the backlight source of the display device. [0003] The LED light strip adopts the design structure of "segmented serial connection of LED serial lines", and multiple LED light-emitting units in the same series are arranged in the same segment, that is, all LED light-emitting units in each light bar segment are connected in series. , each light bar segment is independent of each other. Such as figure 1 As shown, for a simpler and clearer description of the segmented serial LED serial lines, A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, D1, D2, D3, D4 It is an LED light-emitting unit. Four lamps (A1, A2, A3, A4), (B1, B2, B3, B4), (C1, C2, C...
Claims
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