El element having a color filter formed on an upper electrode
AssigneeDenso Corporation
InventorsTomohiro Yonekawa, Hironobu Tamura, Yutaka Hattori, Nobuei Ito, Tadashi Hattori
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Abstract
An EL element having a color filter formed on an upper electrode thereof enables a decrease in the pixel loss or line defects. In the EL element, a lower transparent electrode, first insulating layer, luminescent layer and upper transparent electrode are laminated on a glass substrate. Further, a color filter is formed on the upper transparent electrode. As the color filter there is used a posi-resist having an average molecular weight in a range of from 100 to 50000 or a nega-resist having a polymerization reaction percentage in a range of from 5% to 70%.
Claims12
An EL element comprising an insulating substrate and a lower electrode, insulating layer, luminescent layer and upper transparent electrode laminated directly or indirectly on said insulating substrate, said EL element further comprising a color filter made of organic material and formed on and directly contacting said upper transparent electrode, said organic material having an average molecular weight in a range of from 100 to 50000.
A method of manufacturing an EL element, comprising steps of:
- preparing an insulating substrate;
- laminating a lower electrode, insulating layer, luminescent layer and upper transparent electrode directly or indirectly on said insulating substrate;
- and
- forming on, and directly contacting said upper transparent electrode, a color filter which is made of organic material,
- wherein the step of forming said color filter includes a step of heating said color filter to cause said organic material to have an average molecular weight within a range of from 100 to 50000.
A method of manufacturing an EL panel, comprising steps of
- preparing an insulating substrate;
- laminating a lower electrode, insulating layer, luminescent layer and upper transparent electrode directly or indirectly on said insulating substrate;
- forming on, and directly contacting said upper transparent electrode, a color filter which is made of organic material to form an EL element, the step of forming said color filter including a step of heating said color filter to cause said organic material to have an average molecular weight within a range of from 100 to 50000;
- and
- bonding said EL element and an opposing substrate to each other with bonding agent, said bonding agent being hardened by being subject to a thermo-setting temperature which is set to be at a temperature that is equal to or lower than a heating temperature of said step of heating said color filter.
An EL element comprising:
- an insulating substrate;
- a lower electrode formed on said insulating substrate;
- a first insulating layer formed on said lower electrode;
- a luminescent layer formed on said first insulating layer;
- a second insulating layer formed on said luminescent layer;
- an upper electrode formed on said second insulating layer;
- and
- a color filter formed on and directly contacting said upper electrode, said color filter being made of organic material and having an average molecular weight in a range of from 100 to 50000.
Dependencies are inferred from the claim text.