Samsung Sdi Co., Inc.

Samsung Electronics Co., Ltd.

Byong-gon Lee

Sang-Ho Jeon

Sang-jo Lee

Chun-Gyoo Lee

Su-Bong Hong

Sang-hyuck Ahn

Eung-Joon Chi

Yong-Soo Choi

Chul Ho Lee

Jong-min Kim

Seung-hyun Son

Hyun-seung Cho

Seong-Gi Choo

Hyeon-seok Kim

Ji-hong Lim

Jin-hwan Hwang

Zin-min Park

A field emission type surface light source device and an image display apparatus employing the same. The field emission type surface light source device includes a first substrate and a second substrate that are disposed to face each other; a sealing member that seals the first substrate and the second substrate; first electrodes and second electrodes that are disposed on the first substrate such that the first electrodes cross the second electrodes in an insulated state; electron emitters that are electrically connected to one of the first electrodes and the second electrodes; a phosphor layer that is disposed on one surface of the second substrate; a third electrode that is disposed on one surface of the phosphor layer; and a first terminal and a second terminal that are electrically connected the first electrodes and the second electrodes, respectively, and are disposed on a same side of the first substrate outside of a region sealed by the sealing member.

Field emission type surface light source device and image display apparatus employing the same

A field emission panel is provided. The field emission panel includes a first substrate and a second substrate, a sealing member and a plurality of spaces which are disposed between the first substrate and the second substrate, a plurality of concave portions which are formed on a surface of the first substrate, a plurality of cathode electrodes which are disposed within each of the plurality of concave portions, a plurality of field emission materials which are disposed on each of the cathode electrodes, a plurality of gate electrodes which are fixed to areas of the surface of the first substrate which separate the concave portions of the first substrate with a gap therebetween, a light emission unit which is disposed on the second substrate, and a charging prevention resistance unit which is disposed on the first substrate, on a gap between a pair of gate electrodes.

Field emission panel with a charging prevention resistance unit

An electron emission device includes a first substrate, a second substrate facing the first substrate, a scan electrode formed on the first substrate and having a width Sv, and a data electrode formed on the first substrate perpendicular to and crossing the scan electrode at a crossed region. A unit pixel is disposed in an area of the crossed region and has a pitch Pv. An insulating layer is disposed between the scan electrodes and the data electrodes. An electron emission region is electrically coupled the scan electrode or the data electrode, and the scan electrode and the unit pixel satisfy the following condition: 0.5&#x2266;Sv/Pv&#x2266;0.95.

Electron emission device

An embodiment of an electron emission device includes first and second substrates facing each other, unit pixels being defined on the first and the second substrates, an electron emission unit on the first substrate, phosphor layers on a surface of the second substrate facing the first substrate, each phosphor layer corresponding to at least one unit pixel, non-light emission regions between the phosphor layers, and spacers interposed between the first and the second substrates and arranged in the non-light emission regions, wherein the non-light emission regions comprise spacer loading regions loaded with the spacers, wherein a width of a spacer loading region and a pitch of the unit pixels satisfies the following condition: A/B&#x2267;about 0.2, where A indicates the width of the spacer loading region and B indicates the pitch of the unit pixels located along the width of the spacer loading region.

Electron emission device with reduced deterioration of screen image quality

An electron emission device includes first and second substrates opposing one another with a gap therebetween. Cathode electrodes are formed on the first substrate. An insulation layer is formed covering the cathode electrodes and having apertures. Gate electrodes are formed on the insulation layer and have apertures at locations corresponding to the locations of the apertures of the insulation layer so as to expose the cathode electrodes. Electron emission regions are formed in the apertures on the cathode electrodes. An anode electrode is formed on the second substrate. An outer surface of the electron emission regions is formed with a shape similar to a shape of equipotential lines formed when there is no electron emission region in the apertures, and predetermined drive voltages are applied to the electrodes.

Electron emission device having curved surface electron emission region

An electron emission display for improving brightness uniformity by compensating brightness deviation between respective elements. The electron emission display includes a display panel, a scan driver, a data driver, and a brightness compensator. The display panel includes a plurality of scan electrodes, a plurality of data electrodes, and a plurality of display elements respectively formed at crossing points of the scan electrodes and the data electrodes. The display elements respectively include an electron emitter. The scan driver applies a selection signal to the scan electrode. The data driver applies a data signal to the data electrode. The brightness compensator compensates brightness by changing the data signal when brightness deviation of the display elements is greater than a predetermined threshold value.

Electron emission display and driving method

An electron emission device includes first electrodes arranged on a substrate in a direction of the substrate, and an insulating layer arranged on an entire surface of the substrate and covering the first electrodes. Second electrodes are arranged on the insulating layer and are perpendicular to the first electrodes. Electron emission regions are connected to one of the first and the second electrodes. The lateral edges of the first electrodes and the lateral edges of the second electrodes respectively cross each other.

An electron emission device includes first and second substrates facing each other, an electron emission structure formed on the first substrate, and a light emission structure formed on the second substrate. The light emission structure has phosphor layers and an anode electrode formed on a surface of the phosphor layers. An adhesive film is formed at the peripheries of the first and the second substrates to attach the first and the second substrates to each other. At least one lead portion crosses the adhesive film on the second substrate, and is connected to the anode electrode. The lead portion is partitioned into a plurality of lead lines at the crossed region thereof with the adhesive film, and the plurality of lead lines are spaced from each other.

Electron emission device with plurality of lead lines crossing adhesive film

An electron emission device is provided including a first substrate and a second substrate facing each other and separated from each other by a predetermined distance. An electron emission unit is disposed on the first substrate, and a light emission unit is disposed on a surface of the second substrate facing the first substrate. A grid electrode is disposed between the first substrate and the second substrate, and has a hole region with a plurality of electron beam-guide holes and a no-hole region surrounding the hole region. The first substrate has a first active area and a first outer portion. The second substrate has a second active area and a second outer portion. The grid electrode has a larger area than the first active area and the second active area, and the no-hole region is disposed corresponding to the first outer portion.

Electron emission device having a grid electrode with a plurality of electron beam-guide holes

The present invention relates to an electron emission device, and more particularly, to an electron emission device comprising a grid electrode having a thermal expansion coefficient ranging from about 80 to about 120% of the thermal expansion coefficient of the first or second substrate of the electron emission device. The grid electrode is fixed in position by minimizing misalignment caused by a difference in thermal expansion coefficients between the grid electrode and the first and second substrates of the electron emission device. The grid electrode also minimizes generation of arc discharge. However, even when arc discharge is generated, the grid electrode prevents damage to the cathode electrodes and gate electrodes from that arc discharge. According to the present invention, an electron emission device with increased brightness and resolution is easily realized by applying increased voltage to the anode electrode.

Grid electrode for electron emission device, and electron emission device including the same

In an electron emission device, the surface roughness of a substrate with driving electrodes and an insulating layer is optimized. The electron emission device includes first and second substrates facing each other with a predetermined distance therebetween. An electron emission unit is formed on a surface of the first substrate facing the second substrate, and includes electron emission regions, a plurality of driving electrodes, and an insulating layer for insulating the driving electrodes from each other. A light emission unit is formed on a surface of the second substrate facing the first substrate, and includes phosphor layers and an anode electrode. The first substrate satisfies the following condition: 0.5 nm&#x2266;Ra&#x2266;1.8 nm, where Ra indicates the average roughness of the surface of the first substrate facing the second substrate.

Cathode substrate for electron emission device and electron emission device with the same

A field emission display includes a first substrate and a second substrate that face one another with a predetermined gap therebetween. An electron emission assembly that emits electrons by generating an electric field is formed on the first substrate, and an illumination assembly that realizes the display of images responsive to the emitted electrons is formed on the second substrate. A grid plate is mounted between the first and second substrates and is configured to focus the emitted electrons. The grid plate includes a mask section having apertures through which electron beams formed by the emitted electrons are passed, and protrusions integrally formed thereon and extending from one side of the mask section to support the mask section over the first substrate.

Field emission display having grid plate

An electron emission device includes gate electrodes formed on a substrate. The gate electrodes are located on a first plane. An insulating layer is formed on the gate electrodes. Cathode electrodes are formed on the insulating layer. Electron emission regions are electrically connected to the cathode electrodes. The electron emission regions are located on a second plane. In addition, the electron emission device includes counter electrodes placed substantially on the second plane of the electron emission regions. The gate electrodes and the counter electrodes are for receiving a same voltage, and a distance, D, between at least one of the electron emission regions and at least one of the counter electrodes satisfies the following condition: 1(&#x3bc;m)&#x2266;D&#x2266;28.1553+1.7060t(&#x3bc;m), where t indicates a thickness of the insulating layer.

An electron emission device includes a first substrate and a second substrate facing one another and having a predetermined gap therebetween. An electron emission region for emitting electrons is formed on the first substrate, and an illumination portion for displaying images responsive to the electrons emitted from the electron emission region is formed on the second substrate. A grid electrode is mounted between the first and second substrates and configured to focus the electrons emitted from the electron emission assembly. The grid electrode is provided with a plurality of electron passage openings, of which at least one portion of the interior wall of at least one of the electron passage openings is formed with an inclined plane relative to the first substrate. With the above-structured electron emission device, the grid electrode prevents and/or reduces one or more travel courses of electrons from being varied so that illumination of wrong pixels is prevented and/or reduced and overall color purity is improved.

Electron emission device with a grid electrode

An electron emission device can include gate electrodes formed on a substrate and cathode electrodes insulated from the gate electrodes with an insulating layer interposed between them. Each cathode electrode can have a receptor at a peripheral side. Electron emission regions may be formed within the receptors and in contact with the cathode electrodes. Counter electrodes can face the cathode electrodes, can be coplanar with the cathode electrodes, and can be coupled to the gate electrodes. The shortest distance between the electron emission region and the counter electrode may be smaller than the shortest distance between the cathode electrode and the counter electrode.

Growing community of inventors

Suwon-si, South Korea

Byong-gon Lee