CN101979915A - Method for improving bright uniformity of LED lamps - Google Patents
Method for improving bright uniformity of LED lamps Download PDFInfo
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- CN101979915A CN101979915A CN2010102462721A CN201010246272A CN101979915A CN 101979915 A CN101979915 A CN 101979915A CN 2010102462721 A CN2010102462721 A CN 2010102462721A CN 201010246272 A CN201010246272 A CN 201010246272A CN 101979915 A CN101979915 A CN 101979915A
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- led lamp
- resistance
- led lamps
- lamp
- led
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Abstract
The invention provides a method for improving bright uniformity of LED lamps. In the method, a resistor is arranged between each LED lamp and an output port. In the method for improving the bright uniformity of the LED lamps, the resistor only needs to be arranged on each LED lamp, the circuit is simple, the method is convenient to implement, the resistance cost is low, and the production cost of the whole mobile phone is not influenced.
Description
Technical field
The present invention relates to a kind of LED (Light Emitting Diode, light emitting diode) lamp, particularly relate to a kind of LED of improvement lamp even brightness method.
Background technology
Along with the development of society, the progress of mechanics of communication, communication products such as mobile phone have become the important communication tool of people.And the color of cell phone keyboard lamp and bright dark degree also are that people select the mobile phone important evidence.Cell phone keyboard lamp color is abundant, and is bright evenly dark, can increase the aesthetics of mobile phone, and like this, this mobile phone also can relatively be in great demand.
As shown in Figure 1, when generally the LED lamp is as keyboard light, directly will be connected to output port after the parallel connection of LED lamp.But because the resistance of each LED lamp is variant, the conductor resistance that is connected to the LED lamp also there are differences, and when the LED lamp was lighted, because electric current is inconsistent on it, it was inconsistent to produce LED lamp light and shade.
Summary of the invention
The invention provides a kind of LED of improvement lamp even brightness method, to solve the inconsistent problem of cell phone keyboard lamp light and shade in the prior art.
The present invention solves above-mentioned technical problem by following technical proposals: a kind of LED of improvement lamp even brightness method is characterized in that it is provided with a resistance between each LED lamp and output port.
Preferably, the resistance of described resistance is identical.
Positive progressive effect of the present invention is:
The first, only need add a resistance at each LED lamp, circuit is simple, and it is convenient to realize.
The second, only need add the problem that resistance can solve LED lamp brightness irregularities, the resistance cost is low, does not influence the production cost of whole mobile phone.
Description of drawings
Fig. 1 is the circuit diagram of existing cell phone keyboard lamp;
Fig. 2 improves the circuit diagram of the cell phone keyboard lamp of LED lamp even brightness method for using the present invention.
The specific embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
Principal character of the present invention is by at LED lamp and output port one resistance being set, to reach the purpose of each LED lamp light and shade unanimity.
As shown in Figure 2, the present invention is provided with a resistance between each LED lamp and output port.Be specially, between LED lamp D1107, D1108, D1109, D1110, D1111, D1112 and D1113 and input port KPLED CTRL, resistance R 14, R15, R16, R17, R18 and R19 be set respectively.Especially, the resistance of resistance R 14, R15, R16, R17, R18 and R19 is identical.
Because the resistance of resistance R 14, R15, R16, R17, R18 and R19 is much larger than the resistance of LED lamp lead, by the size of current unanimity behind resistance R 14, R15, R16, R17, R18 and the R19, electric current on LED lamp D1107, D1108, D1109, D1110, D1111, D1112 and D1113 is also consistent, and the LED lamp is luminous just to have become the light and shade unanimity.
A kind of LED of improvement lamp even brightness method of the present invention only need add a resistance at each LED lamp, and circuit is simple, and it is convenient to realize.The resistance cost is low, does not influence the production cost of whole mobile phone.
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, under the prerequisite that does not deviate from principle of the present invention and essence, can make numerous variations or modification to these embodiments.Therefore, protection scope of the present invention is limited by appended claims.
Claims (2)
1. one kind is improved LED lamp even brightness method, it is characterized in that it is provided with a resistance between each LED lamp and output port.
2. a kind of LED lamp even brightness method of improving as claimed in claim 1 is characterized in that the resistance of described resistance is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102462721A CN101979915A (en) | 2010-08-05 | 2010-08-05 | Method for improving bright uniformity of LED lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102462721A CN101979915A (en) | 2010-08-05 | 2010-08-05 | Method for improving bright uniformity of LED lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101979915A true CN101979915A (en) | 2011-02-23 |
Family
ID=43600437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102462721A Pending CN101979915A (en) | 2010-08-05 | 2010-08-05 | Method for improving bright uniformity of LED lamps |
Country Status (1)
| Country | Link |
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| CN (1) | CN101979915A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112287630A (en) * | 2019-07-09 | 2021-01-29 | 苏州市悠越电子有限公司 | Method for improving resistance value of inner loop of keyboard and optimizing layout of printed circuit |
| CN113692093A (en) * | 2021-08-23 | 2021-11-23 | 华域视觉科技(上海)有限公司 | Light-emitting module control method, electronic equipment, light-emitting module, vehicle lamp and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2159047Y (en) * | 1993-05-27 | 1994-03-16 | 李勋田 | Intelligent and amusing computer for children learning chinese character and English |
| CN2781441Y (en) * | 2005-03-16 | 2006-05-17 | 方幸福 | Lighting device for keyboard of portable computer |
| CN101153888A (en) * | 2006-09-29 | 2008-04-02 | 比亚迪股份有限公司 | Testing method for luminous parallel path of flexible printing circuit board |
| CN201387467Y (en) * | 2009-02-27 | 2010-01-20 | 上海宝康电子控制工程有限公司 | I/O analog test board for electronic police |
-
2010
- 2010-08-05 CN CN2010102462721A patent/CN101979915A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2159047Y (en) * | 1993-05-27 | 1994-03-16 | 李勋田 | Intelligent and amusing computer for children learning chinese character and English |
| CN2781441Y (en) * | 2005-03-16 | 2006-05-17 | 方幸福 | Lighting device for keyboard of portable computer |
| CN101153888A (en) * | 2006-09-29 | 2008-04-02 | 比亚迪股份有限公司 | Testing method for luminous parallel path of flexible printing circuit board |
| CN201387467Y (en) * | 2009-02-27 | 2010-01-20 | 上海宝康电子控制工程有限公司 | I/O analog test board for electronic police |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112287630A (en) * | 2019-07-09 | 2021-01-29 | 苏州市悠越电子有限公司 | Method for improving resistance value of inner loop of keyboard and optimizing layout of printed circuit |
| CN113692093A (en) * | 2021-08-23 | 2021-11-23 | 华域视觉科技(上海)有限公司 | Light-emitting module control method, electronic equipment, light-emitting module, vehicle lamp and vehicle |
| CN113692093B (en) * | 2021-08-23 | 2024-01-26 | 华域视觉科技(上海)有限公司 | Light emitting module control method, electronic equipment, light emitting module, car lamp and vehicle |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110223 |