DISPLAY WITH PIXEL ARRANGEMENT

• US 20100315319A1
• Filed: 06/12/2009
• Published: 12/16/2010
• Est. Priority Date: 06/12/2009
• Status: Active Grant

• Current Assignee: Global OLED Technology LLC (LG Display Co., Ltd.)
• Original Assignee: Global OLED Technology LLC (LG Display Co., Ltd.)
• Inventors: Miller, Michael E., Cok, Ronald S.
• Granted Patent: US 8,896,505 B2
• Time in Patent Office: Days
• US Class Current: 345/77
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2320/0233 Improving the luminance or brightness uniformity across the screen
• CPC Class Codes: G09G 2320/0285 using tables for spatial correction of display data
• CPC Class Codes: G09G 3/20 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
• CPC Class Codes: G09G 3/2088 with use of a plurality of processors, each processor controlling a number of individual elements of the matrix
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: H10K 59/129 Chiplets

Abstract

A display, including a substrate having a display area including first and second non-overlapping pixel groups and a gutter located between the first and second pixel groups, the gutter having a dimension in a first direction separating the first and second pixel groups, and each pixel group includes a plurality of pixels, each pixel having three or more differently colored sub-pixels; and wherein the pixel centers of the pixels in each pixel group are arranged in a regular two-dimensional array having one dimension parallel to the first direction, and wherein the pixels within a pixel group are separated by an inter-pixel separation in the first direction; and one or more electrical elements arranged within the gutter, each subpixel being connected to one of the one or more electrical elements, wherein the gutter dimension is greater than the inter-pixel separation, so that artifacts in a displayed image are reduced.

Claims

1. A display, comprising:

a) a substrate having a display area less than the size of the substrate, wherein the display area includes a first and a second non-overlapping pixel group and a gutter located between the first and the second pixel group, the gutter has a dimension in a first direction separating the first and second pixel groups, and each pixel group includes;

i) a plurality of pixels, each pixel having three or more differently colored sub-pixels; and

ii) wherein the pixel centers of the pixels in each pixel group are arranged in a regular two-dimensional array having one dimension parallel to the first direction, and wherein the pixels within a pixel group are separated by an inter-pixel separation in the first direction; and

b) one or more electrical elements arranged within the gutter, each subpixel being connected to one of the one or more electrical elements, wherein the gutter dimension is greater than the inter-pixel separation, so that artifacts in a displayed image are reduced.

2. The display of claim 1, wherein each electrical element has a respective element dimension in the first direction and the gutter dimension is greater than any of the element dimensions.

3. The display of claim 1, wherein each pixel group includes three or more subpixels arranged in the first direction.

4. The display of claim 1, wherein a subpixel in a pixel group has a dimension in the first direction, and the gutter dimension is equal to or less than the dimension of the subpixel in the first direction.

5. The display of claim 1, wherein the display area includes a first, a second, and a third non-overlapping pixel group, the gutter dimension being measured between the first and the second pixel group in the first direction, a second gutter located between the first and the third pixel group and having a second gutter dimension measured between the first and third pixel group in the second direction, wherein the respective gutter dimensions are each greater than respective inter-pixel separations in the respective directions of the pixel groups.

6. The display of claim 5, wherein the first direction and the second direction are orthogonal.

7. The display of claim 1, further comprising a controller for receiving an input image signal and controlling the luminance of the pixels in response to the input image signal to present an image on the display, wherein the controller includes interpolation circuitry for processing the input image signal to compensate for the difference between the dimension of the gutter and the inter-pixel separation within the first direction.

8. The display of claim 1, wherein each pixel includes a repeating arrangement of four subpixels, each subpixel emitting a different color of light, and each pixel includes at least two subpixels for emitting corresponding different colors of light in the first direction, wherein each pixel group includes multiple pixels in the first direction.

9. The display of claim 8, further including a controller for receiving an input image signal and in response to a flat-field input image signal controlling the luminance of the subpixels such that subpixels adjacent to the gutters provide more luminance than the remaining subpixels.

10. The display of claim 1, further including a controller for receiving an input image signal and in response to a flat-field input image signal controlling the luminance of the pixels such that the pixels adjacent to the gutters provide more luminance than the remaining pixels.

11. The display of claim 1, wherein the one or more electrical elements arranged within the gutter include a chiplet electrically connected to the subpixels to drive the sub-pixels to emit light.

12. The display of claim 11, wherein the chiplet has a first chiplet dimension in the first direction and a second chiplet dimension in a second orthogonal direction, the first chiplet dimension smaller than the second chiplet dimension.

13. The display of claim 1, further comprising a light scattering structure or material located adjacent to or within the gutter.

14. The display of claim 1, further including buss lines for conducting power or ground signals located at least partially between the pixel groups.

15. The display of claim 14, wherein the one or more electrical elements arranged within the gutter further include a plurality of chiplets, electrically connected to subpixels by electrical connectors to drive the subpixels to emit light.

16. The display of claim 1, wherein one of the one or more electrical elements arranged within a gutter defines an element dimension and extends in a selected direction across at least one half of the display area, the display further including one or more electrical connector(s) defining respective connector dimension(s) smaller than the element dimension in the selected direction, and further including one or more circuit(s) located in the display area for driving the subpixels to emit light, wherein each of the one or more electrical connector(s) is connected to one or more of the circuit(s).

17. The display of claim 1, wherein the display is an organic electroluminescent display, and wherein each subpixel includes an organic electroluminescent emitter.