KR200168248Y1 - Led display with eeprom - Google Patents
Led display with eeprom Download PDFInfo
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- KR200168248Y1 KR200168248Y1 KR2019960027479U KR19960027479U KR200168248Y1 KR 200168248 Y1 KR200168248 Y1 KR 200168248Y1 KR 2019960027479 U KR2019960027479 U KR 2019960027479U KR 19960027479 U KR19960027479 U KR 19960027479U KR 200168248 Y1 KR200168248 Y1 KR 200168248Y1
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- 238000003491 array Methods 0.000 claims abstract description 5
- 239000003086 colorant Substances 0.000 claims 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
-
- 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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
본 고안의 이이프롬을 가진 발광 다이오드 디스플레이는 발광 다이오드의 어레이로 구성된 LED 어레이와; 상기 LED 어레이의 각각의 모든 발광 다이오드의 휘도값을 기록하고, 상기 LED 어레이의 발광 다이오드의 휘도값 데이터를 읽어들여 LED 디스플레이 컨트롤러의 소프트웨어 프로그램이 각각의 발광 다이오드의 펄스파를 제어하여 상기 발광 다이오드 사이에 생기는 휘도의 에러비를 보정할 수 있는 메모리로 구성된다.The light emitting diode display having an eprom of the present invention includes an LED array comprising an array of light emitting diodes; The luminance value of each light emitting diode of each of the LED arrays is recorded, and the luminance value data of the light emitting diodes of the LED array is read, and a software program of the LED display controller controls the pulse wave of each light emitting diode to control between the light emitting diodes. It is composed of a memory capable of correcting an error ratio of luminance generated in the controller.
Description
본 고안은 휘도 정보 코드가 입력된 메모리를 가진 발광다이오드 디스플레이에 관한 것이며, 보다 상세히는 발광 다이오드 각각의 휘도의 에러 비율을 보정하는 EEPROM(Electrically Erasable Programmable Read only Memory)이 내장된 발광 다이오드 디스플레이(LED Display ; Light-Emitting Diode Display)에 관한 것이다.The present invention relates to a light emitting diode display having a memory into which a brightness information code is input, and more particularly, to a light emitting diode display (EEPROM) having an internally erasable programmable read only memory (EEPROM) that corrects an error rate of luminance of each light emitting diode. Display; Light-Emitting Diode Display).
일반적으로 단색, 2색 또는 3색의 LED 디스플레이는 보통 4×4, 5×7, 8×8, 8×16, 16×16, 16×32, 24×24 또는 32×32 배열로 형성되어 만들어진다. 칩의 특성때문에, LED 디스플레이를 구성하는 발광 다이오드의 휘도가 같지 않을 수 있고, 이것은 디스플레이 효과의 원인에 영향을 끼친다.In general, mono, bi or tricolor LED displays are usually made in 4 × 4, 5 × 7, 8 × 8, 8 × 16, 16 × 16, 16 × 32, 24 × 24 or 32 × 32 arrays. . Because of the nature of the chip, the brightness of the light emitting diodes constituting the LED display may not be the same, which affects the cause of the display effect.
실제적으로 LED 디스플레이에 있어서 각각의 모든 LED 휘도는 각각의 펄스 폭 또는 직류 전압의 조절에 의해 독립적으로 컨트롤된다. 그렇지만, LED 디스플레이의 각각의 LED의 휘도 데이타를 저장하고, 읽어 들이고, 활용하고, 컨트롤하기가 쉽지 않기 때문에, 보통 LED 디스플레이 제작자는 휘도의 등급으로 LED를 구분한다. 이러한 구분 작업은 많은 부가 비용과 작업자를 고용해야 한다.Practically every LED brightness in an LED display is controlled independently by the adjustment of the respective pulse width or direct current voltage. However, because it is not easy to store, read, utilize, and control the brightness data of each LED of an LED display, usually LED display manufacturers classify LEDs by class of brightness. This sorting requires a lot of additional costs and labor.
상기 종래의 문제점을 극복하기 위한 본 고안에 따른 발광 다이오드 디스플레이는 팩키지 내에서 어레이로 정열된 복수개의 발광 다이오드와, 상기 복수개의 발광 다이오드의 각각의 휘도 데이터를 가지며 상기 팩키지에 내장된 메모리 수단과, 상기 메모리 수단에 미리 저장된 상기 휘도 데이터를 이용하여 외부 입력장치로 부터 입력 데이터를 조정하고, 상기 복수의 발광 다이오드의 각각이 균일한 휘도로 구동되도록 펄스 폭을 제어하는 콘트롤러로 구성된다.According to an aspect of the present invention, there is provided a light emitting diode display including a plurality of light emitting diodes arranged in an array in a package, memory means having respective luminance data of the plurality of light emitting diodes, and embedded in the package; And a controller for adjusting input data from an external input device by using the luminance data previously stored in the memory means, and controlling a pulse width so that each of the plurality of light emitting diodes is driven with uniform luminance.
도1은 본 고안의 제 1 실시예에 따른 LED 디스플레이를 도시한 투시도.1 is a perspective view showing an LED display according to a first embodiment of the present invention.
도2는 본 고안에 따른 LED 디스플레이를 도시한 회로도.2 is a circuit diagram showing an LED display according to the present invention.
도3은 본 고안에 따른 LED 디스플레이로 부터 얻어지는 파형 챠트.Figure 3 is a waveform chart obtained from the LED display according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : LED 디스플레이 2 : EEPROM1: LED display 2: EEPROM
11 : 발광 다이오드11: light emitting diode
도1을 참조하면, 본 고안의 실시예에 따른 LED 디스플레이(1)는 다수개의 LED(11)와, 하나의 메모리(2)로 구성된다.Referring to FIG. 1, an LED display 1 according to an embodiment of the present invention is composed of a plurality of LEDs 11 and one memory 2.
상기 메모리(2)는 EEPROM(Electrically Erasable Programmable Read only Memory)이다.The memory 2 is an EEPROM (Electrically Erasable Programmable Read Only Memory).
도2 및 도3을 참조하면, 상기 LED 디스플레이(1)는 4×4 단색의 LED 어레이의 예이다.(또는, 상기 LED 디스플레이(1)는 2색 또는 3색의 LED 어레이가 될 수 있다)2 and 3, the LED display 1 is an example of a 4 × 4 monochromatic LED array (or the LED display 1 may be a two or three color LED array).
상기 EEPROM(2)은 각각의 모든 LED(11)의 휘도값을 기록한다. 그래서 LED디스플레이(1)를 컨트롤하는 소프트웨어 프로그램은 EEPROM(2)으로부터 LED의 휘도값 데이타를 불러쓸 수 있다. 그런 다음 각각의 LED(11)의 펄스 폭을 컨트롤함으로써, 각 LED(2) 사이의 휘도의 에러비를 보정한다.The EEPROM 2 records the luminance values of each and every LED 11. Thus, a software program for controlling the LED display 1 can read the luminance value data of the LED from the EEPROM 2. Then, by controlling the pulse width of each LED 11, the error ratio of the luminance between each LED 2 is corrected.
예를들어, 4×4 어레이 디스플레이(1)에서 하나의 LED 라이트 도트 L1이 조립 또는 재질 특성 차이로 인하여 다른 LED 라이트 도트 L2-L16 보다 낮은 휘도를 가지고, 다른 LED 라이트 도트 L2-L16에 대해서 LED 라이트 도트 L1의 휘도비가 동일한 구동 조건하에서 1:2라면, 상기 휘도비는 도3에 도시된 모든 파형싸이클의 진폭을 256으로 균일하게 나누어서 1:1.004로 보정할 수 있다. LED L1-L16는 EEPROM을 가진 팩키지 어레이로써 정열되고, LED L1-L16의 휘도 데이터는 테스트되어 EEPROM에 저장된다.For example, in a 4 × 4 array display 1, one LED light dot L1 has a lower brightness than other LED light dots L2-L16 due to assembly or material property differences, and LEDs for other LED light dots L2-L16. If the luminance ratio of the write dot L1 is 1: 2 under the same driving condition, the luminance ratio can be corrected to 1: 1.004 by uniformly dividing the amplitudes of all waveform cycles shown in FIG. LED L1-L16 is arranged as a package array with EEPROM, and the luminance data of LED L1-L16 is tested and stored in EEPROM.
LED 디스플레이(1)는 각 LED L1-L16의 제어된 휘도를 가진 원하는 패튼을디스플레이하기 위한 소프트웨어 프로그램이 저장된 RAM 및/또는 ROM, 및 마이크로프로세서를 포함하는 콘트롤러에 의해서 일반적으로 제어된다. 종래의 LED 디스플레이에서, 개인컴퓨터와 같은 외부 입력장치로 부터 디스플레이 되려는 입력패튼에 대응하여, 마이크로 프로세서는 입력 패튼으로서 동일한 펄스폭을 모든 LED 에 보낸다.The LED display 1 is generally controlled by a controller comprising a microprocessor and a RAM and / or ROM in which a software program is stored for displaying a desired pattern with the controlled brightness of each LED L1-L16. In a conventional LED display, in response to an input pattern to be displayed from an external input device such as a personal computer, the microprocessor sends the same pulse width to all the LEDs as the input pattern.
이러한 상황에서, 상기 디스플레이의 LED L1가 다른 LED L2-L16 보다 낮은 휘도를 가진다면, 불균일한 휘도의 패튼을 디스플레이하게 되고, 이것에 의해서, 디스플레이 효과를 저하시키게 된다. 본 고안에 따른 LED 디스플레이에서, 마이크로 프로세서는 콘트롤러로 인하여 조정된 폭을 가진 디스플레이(1)의 각각의 LED에 구동 펄스를 보낸다. 이것은 마이크로 프로세서가 콘트롤러에 저장된 소프트웨어 프로그램에 의해서 제어되어, EEPROM(2)에 기록된 휘도 데이터를 가져와서, 디스플레이 되려는 입력 패튼을 조정하기 때문이다. 이 예에서, 마이크로 프로세서는 저휘도인 LED L1을 위한 구동 펄스의 폭을 배가시킬 것이고, 이것에 의해서 2배의 휘도가 되어, 균일한 휘도의 디스플레이 패튼을 얻을 수 있게 된다.In such a situation, if the LED L1 of the display has a lower brightness than the other LEDs L2-L16, it will display a pattern of non-uniform brightness, thereby degrading the display effect. In the LED display according to the present invention, the microprocessor sends a drive pulse to each LED of the display 1 with an adjusted width due to the controller. This is because the microprocessor is controlled by a software program stored in the controller to take the luminance data recorded in the EEPROM 2 and adjust the input pattern to be displayed. In this example, the microprocessor will double the width of the drive pulses for the low brightness LED L1, thereby doubling the brightness, resulting in a display pattern of uniform brightness.
각각의 LED L1-L16 의 휘도 보정의 결정은 파형 싸이클의 분배수에 따르므로, 에러비는 1/256=0.0039... ≒0.004=0.4%로서 파형 싸이클의 분배수의 역수로 상당한 비율로 저하될 수 있다.Since the determination of the luminance correction of each LED L1-L16 depends on the number of distributions in the waveform cycle, the error ratio is 1/256 = 0.0039 ... ≒ 0.004 = 0.4%, which is a significant decrease in the inverse of the number of distributions in the waveform cycle. Can be.
그러므로, 에러비는 100%에서 0.4%로 감소되고, 그 휘도비는 1:2에서 1:(1±0.004)로 , 즉 1:1.004로 감소된다. 그러므로, 휘도 균일성이 상당히 향상된다.Therefore, the error ratio is reduced from 100% to 0.4%, and the luminance ratio is reduced from 1: 2 to 1: (1 ± 0.004), that is, 1: 1.004. Therefore, luminance uniformity is considerably improved.
상술한 바와 같이, LED 디스플레이(1)에서 EEPROM(2)의 설치는 LED 디스플레이 컨트롤러의 소프트웨어 프로그램이 사용되고, 각각의 모든 LED(11)의 휘도값을 읽어들여 LED(11) 사이의 에러 비율을 보정한다. 그러므로 LED 디스플레이의 제작을 위하여 다른 휘도의 LED를 매칭시킬 필요가 없다.As described above, the installation of the EEPROM 2 in the LED display 1 uses a software program of the LED display controller, and reads the luminance values of all of the LEDs 11 to correct the error ratio between the LEDs 11. do. Therefore, there is no need to match LEDs of different brightness for the manufacture of LED displays.
본 발명의 한 실시예만을 도시하고 기술하였지만, 본 발명과 관련된 정신 및 장치로부터 벗어남 없이 여러가지 변경될 수 있는 것이 이해될 것이다. 예를들어 상기 LED 디스플레이는 4×4, 5×7, 8×8, 8×16, 16×16, 16×32, 24×24, 32×32를 포함하여 여러가지 도트 매트리스 어레이로 만들어질 수 있다.While only one embodiment of the invention has been shown and described, it will be understood that various changes may be made therein without departing from the spirit and apparatus associated with the invention. For example, the LED display can be made of various dot mattress arrays including 4 × 4, 5 × 7, 8 × 8, 8 × 16, 16 × 16, 16 × 32, 24 × 24, 32 × 32. .
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960027479U KR200168248Y1 (en) | 1996-08-31 | 1996-08-31 | Led display with eeprom |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960027479U KR200168248Y1 (en) | 1996-08-31 | 1996-08-31 | Led display with eeprom |
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| Publication Number | Publication Date |
|---|---|
| KR19980013875U KR19980013875U (en) | 1998-06-05 |
| KR200168248Y1 true KR200168248Y1 (en) | 2000-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR2019960027479U Expired - Lifetime KR200168248Y1 (en) | 1996-08-31 | 1996-08-31 | Led display with eeprom |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100318277B1 (en) * | 1999-08-17 | 2002-01-18 | 이종하 | Apparatus For Controlling Color Level of Image Display System with Light Emitting Diode Array and method for controlling the same |
| KR100840952B1 (en) | 2003-09-08 | 2008-06-24 | 바르코 엔.브이. | Pixel module for large displays |
-
1996
- 1996-08-31 KR KR2019960027479U patent/KR200168248Y1/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100318277B1 (en) * | 1999-08-17 | 2002-01-18 | 이종하 | Apparatus For Controlling Color Level of Image Display System with Light Emitting Diode Array and method for controlling the same |
| KR100840952B1 (en) | 2003-09-08 | 2008-06-24 | 바르코 엔.브이. | Pixel module for large displays |
Also Published As
| Publication number | Publication date |
|---|---|
| KR19980013875U (en) | 1998-06-05 |
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