# US 10,310,314 B2 · Bright edge display for seamless tileable display panels

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- Number: US 10,310,314 B2
- Document ID: US10310314B2
- Status: Granted
- Kind: B2
- Application number: 14/826,743
- Filed: 2015-08-14
- Published: 2017-02-16
- Granted: 2019-06-04
- Earliest claimed: 2015-08-14
- Assignees: X Development LLC
- Applicants: X Development LLC
- Inventors: Philip E. Watson; Pey Lung Fu; Hung-Yu Chen; Carlin Vieri; Adam E. Norton; Andrei S. Kazmierski; Serge J. A. Bierhuizen; Nicholas C. Loomis; Behnam Bastani; Yachi Lee
- Web page: https://patentgrep.com/patent/US10310314B2

## CPC

- G02F 1/13336: {Combining plural substrates to produce large-area displays, e.g. tiled displays}
- G02F 1/133526: {Lenses, e.g. microlenses or Fresnel lenses}
- G02F 1/133602: {Direct backlight}
- G02F 1/133611: {including means for improving the brightness uniformity}
- G02F 1/134309: {characterised by their geometrical arrangement}
- G02F 1/133388: {with constructional differences between the display region and the peripheral region}
- G02F 1/134345: {Subdivided pixels, e.g. for grey scale or redundancy}
- G02F 2201/52: RGB geometrical arrangements
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS

## Abstract

A display panel includes an array of display pixels to output an image. The array of display pixels includes a central pixel region and a perimeter pixel region. The central pixel region includes central pixel units each having three different colored sub-pixels. The different colored sub-pixels of the central pixel units are organized according to a central layout pattern that repeats across the central pixel region. The perimeter pixel region is disposed along a perimeter of the central pixel region and includes perimeter pixel units that increase a brightness of the image along edges of the central pixel region to mask gaps around the array of display pixels when tiling the array of display pixels with other arrays of display pixels.

## Claims

### Claim 1

A display panel, comprising:
an array of display pixels to output an image, the array of display pixels including:
a central pixel region including central pixel units each having three different colored sub-pixels, wherein the different colored sub-pixels of the central pixel units are organized according to a central layout pattern that repeats across the central pixel region; and
a perimeter pixel region disposed along a perimeter of the central pixel region, the perimeter pixel region including perimeter pixel units that increase a brightness of the image along edges of the central pixel region to mask gaps around the array of display pixels when tiling the array of display pixels with other arrays of display pixels, wherein the perimeter pixel units include different combinations of white and colored sub-pixels within the perimeter pixel region, the perimeter pixel units including first perimeter pixel units each having two white sub-pixels and one colored sub-pixel and second perimeter pixel units each having one white sub-pixel and two colored sub-pixels, wherein the first perimeter pixel units are peripheral to the second perimeter pixel units, and the two white sub-pixels of a given one of the first perimeter pixel units are separated from the one white sub-pixel of a given one of the second perimeter pixel units by the two colored sub-pixels of the given one of the second perimeter pixel units and the one colored sub-pixel of the given one of the first perimeter pixel units.

### Claim 2 (depends on 1)

The display panel of claim 1, wherein at least a portion of the perimeter pixel units include the white sub-pixels.

### Claim 3 (depends on 2)

The display panel of claim 2, wherein at least a portion of the perimeter pixel units include the colored sub-pixels.

### Claim 4 (depends on 3)

The display panel of claim 3, wherein a portion of the perimeter pixel units are white pixel units that only include reduced size white sub-pixels that are smaller than the colored sub-pixels.

### Claim 5 (depends on 4)

The display panel of claim 4, wherein the perimeter pixel region includes two adjacent sub-pixel columns of the white sub-pixels disposed along left and right perimeter regions and includes a row of the white sub-pixels disposed along top and bottom perimeter regions.

### Claim 6 (depends on 1)

The display panel of claim 1, wherein the central pixel units of the central pixel region generate the image having an N×M pixel resolution and wherein the perimeter pixel units are extra pixel units outside the N×M pixel resolution.

### Claim 7 (depends on 6)

The display panel of claim 6, further comprising:
a screen layer upon which the image is projected from the array of display pixels;
an illumination layer to illuminate the array of display pixels, wherein the array of display pixels is disposed between the illumination layer and the screen layer; and
a Fresnel lens disposed between the screen layer and the array of display pixels,
wherein the perimeter pixel units provide extra light to a perimeter boundary of the Fresnel lens to compensate light truncation of the central pixel units caused by the perimeter boundary of the Fresnel lens.

### Claim 8 (depends on 1)

The display panel of claim 1, wherein at least a portion of the perimeter pixel units are rotated 90 degrees relative to the central pixel units.

### Claim 9 (depends on 1)

The display panel of claim 1, further comprising:
a display layer including a plurality of arrays of display pixels, wherein an inter-array separation pitch between adjacent arrays of the plurality of arrays of display pixels is greater than an inter-pixel pitch between adjacent central pixel units;
a screen layer upon which the image is projected from the plurality of arrays of display pixels; and
an illumination layer to illuminate a backside of the display layer.

### Claim 10 (depends on 9)

The display panel of claim 9, wherein the perimeter pixel units of the plurality of arrays of display pixels have layout patterns that vary based upon locations of each of the plurality of arrays of display pixels within the display layer.

### Claim 11 (depends on 1)

The display panel of claim 1, wherein the different combinations of the white sub-pixels and the colored sub-pixels within the perimeter pixel units vary based upon location within the perimeter pixel region.

### Claim 12 (depends on 1)

The display panel of claim 1, wherein the central pixel units and the perimeter pixel units all include three sub-pixels each.

### Claim 13

A tileable display panel, comprising:
an illumination layer;
a screen layer; and
a display layer disposed between the illumination layer and the screen layer to be illuminated from behind by the illumination layer and to project an image onto the screen layer, the display layer including a plurality of display pixel arrays, wherein at least a portion of the plurality of display pixel arrays each includes:
a central pixel region including central pixel units each having three different colored sub-pixels, wherein the different colored sub-pixels of the central pixel units are organized according to a central layout pattern that repeats across the central pixel region; and
a perimeter pixel region disposed along a perimeter of the central pixel region, the perimeter pixel region including perimeter pixel units that increase a brightness of the image along edges of the central pixel region to mask inter-panel gaps when tiling the tileable display panel with other tileable display panels, wherein the perimeter pixel units include different combinations of white and colored sub-pixels within the perimeter pixel region, the perimeter pixel units including first perimeter pixel units each having two white sub-pixels and one colored sub-pixel, second perimeter pixel units each having one white sub-pixel and two colored sub-pixels, and third perimeter pixel units each having three white sub-pixels, wherein the third perimeter pixel units are organized into rows, and the white sub-pixels of each of the first and second perimeter pixel units are organized into columns of white sub-pixels.

### Claim 14 (depends on 13)

The tileable display panel of claim 13, wherein at least a first portion of the perimeter pixel units include the white sub-pixels.

### Claim 15 (depends on 14)

The tileable display panel of claim 14, wherein at least a second portion of the perimeter pixel units include two or more of the colored sub-pixels.

### Claim 16 (depends on 15)

The tileable display panel of claim 15, wherein a third portion of the perimeter pixel units are white pixel units that only include reduced size white sub-pixels that are smaller than the colored sub-pixels.

### Claim 17 (depends on 16)

The tileable display panel of claim 16, wherein the perimeter pixel region includes two adjacent sub-pixel columns of the white sub-pixels disposed along left and right perimeter regions and includes a row of the white sub-pixels disposed along top and bottom perimeter regions.

### Claim 18 (depends on 13)

The tileable display panel of claim 13, wherein the central pixel units of the central pixel region generate the image having an N×M pixel resolution and wherein the perimeter pixel units are extra pixel units outside the N×M pixel resolution.

### Claim 19 (depends on 18)

The tileable display panel of claim 18, further comprising:
a Fresnel lens disposed between the screen layer and the plurality of display pixel arrays,
wherein the perimeter pixel units provide extra light to a perimeter boundary of the Fresnel lens to compensate for light truncation of the central pixel units caused by the perimeter boundary of the Fresnel lens.

### Claim 20 (depends on 13)

The tileable display panel of claim 13, wherein at least a portion of the perimeter pixel units are rotated 90 degrees relative to the central pixel units.

### Claim 21 (depends on 13)

The tileable display panel of claim 13, wherein an inter-array separation pitch between adjacent display pixel arrays is greater than an inter-pixel pitch between adjacent central pixel units.

### Claim 22 (depends on 21)

The tileable display panel of claim 21, wherein the perimeter pixel units of the plurality of display pixel arrays have layout patterns that vary based upon locations of each of the plurality of display pixel arrays within the display layer.

### Claim 23 (depends on 13)

The tileable display panel of claim 13, wherein the three white sub-pixels of the third perimeter pixel units each having a reduced size relative to the colored sub-pixels in the central pixel region.

### Claim 24 (depends on 23)

The tileable display panel of claim 23, wherein the rows of the third perimeter pixel units extend across a top and a bottom of the perimeter pixel region adjacent to the central pixel region.

### Claim 25 (depends on 24)

The tileable display panel of claim 24, wherein the columns of white sub-pixels extend across sides of the perimeter pixel region adjacent to the central pixel region.